Question about Relisys RLT1720 17" LCD Monitor

37 Answers

Monitor displays breifly then goes to blank screen

Hi, Whenever I turn on my monitor it displays the computers output briefly (~half a second) before going blank. I have tried the monitor on two other computers with the same result so it is definetaly not a computer problem. The power light on the front of the monitor stays green when the screen goes blank. Whenever I turn the power off and back on again the exact same thing happens. Help please!!

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  • 58 more comments 
  • Anonymous Nov 01, 2007

    i was trying to refresh the desktop accidently i click on display mode to high instead to true colour mode display.

  • Seau Nov 05, 2007

    I Have the same model an the same model (benq937s+).
    I am never going to buy anything from benq and phillips ,its the same company.

  • wagwag Nov 06, 2007

    I have the benq fp737s monitor and the power turns on saying no signal detected and then a black screen with no wording also the light goes orange .help.

  • Anonymous Nov 09, 2007

    displays breifly then goes to blank

  • tazard Nov 18, 2007

    BenQ FP71E+ (17" LCD)
    Just started the black screen but comes on for about 1 second-problem.
    Shined bright desklamp on screen and can see desktop image. Hence assuming the backlight has failed. Will seek repairer's advice.

    -Tazard

  • Anonymous Nov 19, 2007

    My Acer AL1914 does the same thing. It goes blank after just enough time to see the desktop. Power off and on, the same thing happens. Green power light stays on when it blanks.

  • rdemel Nov 29, 2007

    I have a Dell E172FPb monitor that exihibits the same screen blank problem. It powers up and displays screen image for about a second, then goes blank. The power button stays green. I can turn power button off then on again, and the screen turns on for a second, then off again. I plugged monitor into another PC and the same problem was verified, so the monitor is definitely bad.

  • Dan from SC Nov 29, 2007

    When I power on the computer the monitor will display for 1/2 a second then the screen goes black I turned the monitor off then back on and it came on for 1/2 a sec. and went black again the power button stays solid blue the entire time so I know the power is on. I hooked up my old reliable 15in CRT monitor and the PC works Hooked the LCD to my laptop and got the same results came on then blink black screen after 1/2 a sec. I how ever did try the shining of the flashlight at the screen and did see a faint image of what was showing on the CRT screen. so how do I replace the board or the tubes if they are bad, I am mechanically inclined.

  • Anonymous Nov 29, 2007

    My Dell computer screen goes black for a few seconds while I'm using it.

    It does that at least 10 to 15 times a day. It's like it's blinking.

    I've call Dell's Tech Support they take me throught some steps as how to solve the problem but to no availed.

    Even when I trun my PC on and I turn the monitor on it goes off and I have to trun the monitor on again.

    My PC is a Dell Dimension 3000 system name D31D7V61 15 inch screen.

    I hope this info will help.

    Can you help me?



    Thank you!



    Brandy ( BL527@aol.com)

  • bondijane Dec 05, 2007

    Advent LCD screen doing exactly the same thing

  • susiedreamer Dec 06, 2007

    monitor takes ten minutes to come on then displays for one nano second and goes blank again. blue light is on but nothing on the screen.

  • privetus Dec 11, 2007

    My problem is exactly the same. Monitor is Envision EN-1700. It use to be 4-5 turns on and off to get it started. Now it takes 25 times!

  • Anonymous Dec 18, 2007

    Monitor displays breifly then goes to blank

  • bluefire Dec 19, 2007

    I'm having the same problem. However I do not see anything when I use a flashlight to look into the screen. Also I tried it using VGA connection with a Dell laptop and at first I got a white screen and then the monitor started  working  I haven't been able to make it work with other laptops or desktops. When I use with DVI connection the screen goes blank after 1 sec and then after a few more seconds  it goes even darker and power light will not cut off. When I push esc button on keyboard I get a sound letting me know everything is frozen and I have to cut computer off and reboot.

  • member503 Dec 24, 2007

    monitor comes on they goes back out

  • Anonymous Dec 27, 2007

    Hi, Whenever I turn on my monitor it displays the computers output briefly (~half a second) before going blank. I have tried the monitor on two other computers with the same result so it is definetaly not a computer problem. The power light on the front of the monitor stays green when the screen goes blank. Whenever I turn the power off and back on again the exact same thing happens.
    Help please!!

  • Anonymous Jan 05, 2008

    I got the same problem on my Fujitsu/Siemens Scaleoview
    But when I leave it turned off for a few hours, it works for an hour or so

  • Zannie Jan 06, 2008

    monitor screen displays breifly and goes blank, green light stays on

  • Danlk Jan 08, 2008

    Hi, Whenever I turn on my monitor on it displays the computers output briefly before going blank. The power light on the front of the monitor stays green when the screen goes blank. Whenever I turn the power off and back on again the exact same thing happens. I have tried a different monitor on the same system and it works fine so I know it is the Gateway FPD 1830 18.1 in. Flat Panel LCD Monitor. I have replaced the inverter board on several monitors (different brand) at work and am wondering if anyone knows where I can get a board for this model.


    Help please!!

  • Jilly1019 Jan 10, 2008

    Screen goes blank and flickers, I have hooked up other monitors to this computer and they all work fine, it's definately the monitor. When I banged it with frustration it came back and works for about 10 min until I bang it again. Is there a part inside I need to replace??

    Thanks.

  • Chinch Jan 19, 2008

    Our monitor (Kogi L7YH) does the same. It will come on for a second at the computer start-up then go black with the green light still on. Tried another monitor on the computer and it works fine (so it is definitely NOT the computer.) Looking at your website for a solution. Thanks

  • kerz11 Jan 26, 2008

    dell E153fpc goes blank light stays green turn off then on again works for a split second blank again

  • Ginia Jan 30, 2008

    When i turn the computer on the green light goes on but the screen remains blank

  • James Holmes Feb 07, 2008

    Could we please get some more answers to this problem because I don't see anything with a flashlight.

    Thank You,

    JCHOLMES

  • Anonymous Feb 28, 2008

    This has been a great monitor but this morning it doesn't come on. The green light is on and the yellow light beside it -both flicker on and off repeatedly. I'd like to keep the monitor.

  • Anonymous Mar 04, 2008

    I have the exact same problem with the DELL 17" EP172FPb LCD monitor. The power button remains lit green while the screen blanks off. Even when accessing the menu, the screen will blank out. Obviously a problem with the display circuitry itself and not a video adapter problem.

  • Majimoto Mar 05, 2008

    when i turn on my computer the monitor display on and then off the steady flash greeen button remain lighing while the creen goes black i tested the monitor to another computer shows the same but if you connect the CPU to another moniter functioning well

    Any idear please to solve it

    by Majimoto

  • Anonymous Mar 10, 2008

    I have the same problem

  • Anonymous Mar 28, 2008

    HP vs17 LCD monitor blink and trip off while the blue power light is on and when i off it and on it, it came on with a resolution recommending settings e.g 1280 X 102, even when i set it to that, it still encounter the same problem.

  • Genkell Apr 03, 2008

    When I turn on the PC the out put flashes for a second or two then the screen goes blank ,but the green light is still on,And if I turn it off and turn it back on it does the same thing again,If the machine is done booting and I turn if off and on I would get a glimes on the windows screen then it goes blank again.

  • trevorhidey Apr 16, 2008

    Whenever I turn on my monitor it displays the computers
    output briefly (~half a second) before going blank. I have tried the
    monitor on two other computers with the same result so it is definetaly
    not a computer
    problem. The power light on the front of the monitor stays green when
    the screen goes blank. Whenever I turn the power off and back on again
    the exact same thing happens.

  • Anonymous Apr 20, 2008

    I have a PC that everytime it's booted the monitor comes on for a half second then it goes black, but green light stays on?

  • mseason Apr 23, 2008

    Dell 3000 XP The sreen just keeps going black light stays green and then when I push that button off then on it comes back for a while. Thanks

  • sargon001 May 01, 2008

    L1710S - green power light on , displays fine for 10 sec , then goes blank , removing the signal cable or tuening the power button off on restores picture for 2 sec then goes blank again. Time frame for cold till problem occures can vary from 10 sec till 5 mins , butafter it occure 2 sec is all it works for

  • Anonymous May 08, 2008

    Similar blank screen problem but stays blank even after system cools down. Reboot, get brief flash of Dell logo "Genesis Display Perfection" then blank after couple of seconds. Green light on tower front; light pattern on back indicates memory failure - but don't even know what a memory "card" or "chip" looks like. Guess I need hardware assistance; not confident in starting to make my own repairs.

  • sickmyduck May 11, 2008

    I had similar issues with our proview monitor. Same thing with the display, on a few seconds then goes blank, also while power light remained on. We seemed to have noticed a slight flicker or twitch in the screen (or the light of the screen) about a month ago, hard to explain. It didn't actually affect our view or the display of the screen, just a very slight, blink and you will have missed it kind of flicker. Then one day, all we had was the short lived display shown upon reset/ start up of system and/or power on/off button or unplugging monitor from tower and power plug from outlet. So I hook up an old monitor for a few days, all the while researching this issue. I downloaded the video card drivers from the proper website just in case there were any updates or changes since original install and also went to proview.com and aquired appropiate drivers based on our model number, of course. just for kicks. With the tower power off, I plugged monitor in question back into tower along with power cord, then turned tower's power on and it flashed on a second and then back off to blank/ black screen, with power light on all the while on the monitor. Disgusted and running late for an appointment at that time, I quickly restarted system and without waiting around for results, I left the house for the day. I came back and sat down at the desk, just irritated with the thought of either troubleshooting anymore or having to buy a new LCD monitor, especially since this one was new out of the box only a year ago. To my surprise, as I stared at my screen, which was currently displaying the lame flying windows screensaver. I did a double take and sure enough, it was working. So here I am writing this, but still waiting for the screen to go black any second. I do also still notice that weird screen flicker once every minute or two though,but so far so good. Strange???? Can I get some feed back to clarify, help me out guys, please. Did I do something right and actually fix it or is it a fluke? Well, as I feared, the screen just went black again as I was typing this and am now closing this as I am now holding the flash light to the screen. Where did you say you can get those bulbs again? LOL, seriously! And some instructions too please.......Thanks.

  • Anonymous May 23, 2008

    Yep, I've got the exact same thing with my F215. It used to work after turning the moniot power off and on for a few minutes, but I don't think that's even working now.

  • Anonymous Jun 10, 2008

    screen goes white and blank. then says underneath.. all about blank. but cant open it. right click on close and it does close...comes up in the middle of working on e.mails mainly

  • manojra077 Jun 20, 2008

    I turn on the moniter. display is blank. but moniter light is green.

  • Anonymous Jun 26, 2008

    Dear friend,

    I just fixed my Viewsonic VA902b, here is how.

    1/. Remove the LCD housing

    2/. Remove e Main Power supply (label the 4 connectors for the 4 lamps before you unplug them)

    3/. Locate the 1000uf-25v Cap (i think c806) check the top of the cap, if the top is buble up then replace it. I replaced my with 1000uf-35V 105 C, use the cap with long leads, solder it to the PCB and lay the cap down away from the heat sink (there should be plenty of room)

    4/ check all solder joins, if it look like cold joins simply re-solder it

    5/ when you are done, you can apply power to the board and check for the voltage at the cap, it should read about 14.7VDC

    6/. Re-install every thing and it should be good to use again

    Please pardon my english. Good luck to all

  • artlight21 Jul 05, 2008

    I found a lap top in dumpster 2003 gateway screen dark,windows xp.ran it through my pc monitor(also gateway) the windowsxp screen came up with the running blue squares from left to right .Then black agian.,

  • bair965 Jul 15, 2008

    Hi, have the same problem ... have a Dell GX270 and whenever i boot after a min the screen goes balnk and tells me NO SIGNAL.... i then changed my Graphics card and hoped that was that problem... when i made this change everything came out real nice and fine for about 30 mins.. then poof it went balnk and said NO SIGNAL... since then, everytime i boot im lucky my windows will come on and stay on for about 5 to 10 min... anyone can help????

  • glmbak Jul 16, 2008

    Tried turning off monitor but screen went blank and light stayed on.

    Now cannot see anything as screen has stayed blank.

    \

    HELP

  • Anonymous Jul 22, 2008

    i have a pc which has not been used for a while. when i tried to use the pc it sounds as if it is starting up but the monitor stay blank and the green indicator light is on.

  • latigney Aug 04, 2008

    I have the exact same problem. Please give me a solution so we can fix this monitor. Dell monitor.

    LT

  • Anonymous Aug 20, 2008

    monitor only stays on for a second befor going blank

  • Errol612 Sep 05, 2008

    Same here exact same problem - I have also tried monitor on other Pcs with same result. I think the problem here must be with the backlight but locating and replacing it is antehr question.

    Does anyone know how to locate the backlight in order to try and get a part number from it ? I have the V7 L17AS model

  • kazit Oct 11, 2008

    i think i have the same problem too, my screen went Dim, and i want to know how to fix it and where do i get the PARTS that i need to replace to fix it.

  • Anonymous Nov 11, 2008

    monitor screen shuts off and on

  • Bengoiano Nov 14, 2008

    Yep, same thing. Tried it on my laptop output, and same thing happened. It's impossible to contact GEM, even if it's under warranty, they don't get back to you. Any resolution for you guys?

  • Anonymous Nov 14, 2008

    Same problem except I do notice before the screen goes blank there is a strip of green error code in the center of the picture.





    Guest

  • Anonymous Dec 11, 2008

    i also have the same problem.. i try to replace to another pc but the result still same. the screen become blank after a few second. then i switch off the monitor and then switch on it again, it will be OK for a few second then become blank again.. please suggest me...

  • drod2204 Dec 30, 2008

    I have the same problem on a Samsun T260HD

  • Anonymous Jan 26, 2009

    Hi,

    I have this exact same issue with the Dell LCD flat panel E172FP. It had been a great monitor for the last 5 years and just one day when it was turned on flashed the screen on and then went black. When turned off and back on it does the same thing. Now using an old clunker until can afford a new screen or fix the Dell.

    Any easy solutions welcomed.

    Thanks

    Nanette

  • gkbadshah Feb 08, 2009

    I have Benq 19"lcd moniter cannot get power when switched on. The smps seem like heated up and the varnish melted wher can I find the parts . Iive in canada ,ontario Markham l3s1n2 please help I also checked the capacitors it looks ok.

    Thanks ,

    gkbadshah

  • mwroses Feb 26, 2009

    i have a telefunken lcd which when i turn it on it goes blank and thier is sound, what can i do to fix this

  • viskii420 Mar 12, 2009

    I have the same issue with my sony monitor SDM-Hs73P. The monitor would power up and go blank while the green light indicates that is on. I open the monitor the and took off the top back light from the inverter and the monitor would has same simtoms with the back light off. I reversed the Inverter board so now the top power supply would supply the bottom back light and the simtoms are the same. Would this indicate that the top back light is out? or is different issue?

  • lydiaanthony May 14, 2009

    +MY FLATSCREEN(BRILLIANCE150P)IS SCREEN APPEARES NO VIDEO INPUT AFTER APPEAR AGING

  • viskii420 May 11, 2010

    I have the same issue with my sony monitor SDM-Hs73P. The monitor would
    power up and go blank while the green light indicates that is on. I
    open the monitor the and took off the top back light from the inverter
    and the monitor would has same simtoms with the back light off. I
    reversed the Inverter board so now the top power supply would supply
    the bottom back light and the simtoms are the same. Would this indicate
    that the top back light is out? or is different issue?

  • sargon001 May 11, 2010

    the inverter board repair any input on what to look for on this model

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37 Answers

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Well my Acer AL1711 finally gave up in as much as the screen flashed briefly at switch-on then went blank, regardless of brilliance setting so I decided to take it apart and try to fix it. The good news is that IT WAS NOT THE LAMPS that I feared in my earlier post and was easier than I had ever dreamed! First allow a good period of time for the internal components to discharge before starting. Remove the plastic clip at the base hinge to expose 4 screws - remove all four to release the stand. Then remove the 4 black cross head screws that appear to hold the back on, they do but there is more to do. Carefully tease the silver surround away from the case, best to start in the centre of each side and finish at the corners. There are many plastic clips to release before the surround comes away. Now remove the four cross head screws holding the pushbutton switch circuit board. The whole assembly can now be removed from the case and reveal a metal cover held by 2 SHORT (remember that!) SHORT! threaded machine screws. These once removed will allow the case to be slid away from the holding tabs located down the edges of the cover and removed. Now unplug the connectors from the board that has the mains input connector attached to it. You will see a heatsink with 4 electrolytic caps above it. Silly ACER designers, have placed the capacitors so that they get all the heat from the heatsink! Yes folks, the capacitors are above the heatsink when the monitor is in its normal operating position! So all the convected heat dries them out, nice. So the fault is due to a silly design error! Replace all 4 capacitors, two of them are 1000uF at 16V and the other two are 470uF at 16V, all radial types. Try and get capacitors with the highest operating temperature, at least 105 degree types and remember these are polarised, make sure you connect the capacitor + wire to + on the circuit board. You should have no problems with re-assembly but don't put the wrong screw where the short ones went or you are liable to see it come out of the screen LOL! Most important - - Don't forget the screw holding the earth tag to chassis. Good Luck, you will be amazed how much brighter the screen is now!

Posted on Mar 16, 2007

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  • 47 Answers

Hi scuball, **PLEASE NOTE - This solution applies to ALL LCD's but NOT CRT's** It's a very common problem with all LCD monitors LCD's use four small Cold Compact Fluorescent bulbs to back light the display. (thats what gives the LCD it's brightness allowing you to see it) The inverter board runs these lights and when they go bad they will typically show symptoms like you have or the monitor power light comes on and you have either no display or a very dim display. If you ever have one that has no display but the power light is on you can check by shining a flashlight directly into the LCD from the front (right into the screen) if you can see an image then it's either the inverter board (most likely) or the CCFL bulbs have gone bad. The inverter board and CCFL's are replaceable. Good Luck, El Duderino **PLEASE NOTE - This solution applies to ALL LCD's but NOT CRT's**

Posted on Nov 24, 2006

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I had same problem with my Sceptre X9S-Naga II 19", which I'd had to replace within a week of original purchase because of an apparently-identical problem at that time. Pissed me off that this second monitor had just 2 years' worth of use on it...I paid $500 in the day, now worth about $200 if new. I wonder if this lack of longevity is to be expected from LCDs, esp. considering the CRT I finally offed was 9 years old with never a problem. In the end, it breaks out like this: 470uF/35VDC electrolytic capacitor from Radio Shack: $1.66 Hours here and there over the course of a week spent dissassembling, poking, prodding, and googling: incalculable Satisfaction of resurrecting monitor: $200 plus landfill karma-credit I had some assistance from a very public-spirited electronics repair website put up by a guy in Malaysia, without which I probably would have run the thing over with a truck by now. His pertinent web page is http://www.electronicrepairguide.com/lcd-monitor-repair.html There is a /lot/ of info there--sift through the maze of pages and see what he's got to share from his tech experience. Details: In my case, I had no fancy meter to check almost anything while in place, just an aging DVM. There was a chance that one of the lamps was bad (an easy but possbily expensive replacement) so I decided to pull them out of the pockets they slide into (like...fission control rods at your nearby nuke plant) so that I could directly see what they were doing during the brief power-on time. These are amazing ultramini fluorescent tubes, or at least closely resemble them in color, proportions, and wiring. They're powered by an inverter circuit that feeds them chopped high-voltage, I believe. When I reconnected them, now out of their wells, and powered up, they ALL came just partway on--not the full length of each tube, much like a fluorescent tube does when it is struggling to start--and just before my power-indicator would quit. I swapped around the lamp connectors to see if the performance would change, and it remained the same...so I knew it wasn't likely to be any lamp that was the problem. The power supply was producing SOMETHING at some points on the board, but I had no idea what to expect or where. 80VDC at one point seemed wildly high, but turned out to be OK in the end. On about day 67, brute force triumphed over lack of training and service data: I found the guilty cap by desoldering four of the 14 electrolytic caps on the board. I chose the caps I did to start with only because they were 'paired,' so I knew I'd be able to do crude side-by-side comparisons of resistance on them, in order to maybe-kinda-check if one was totally shorted or likely out of spec. The first pair checked out as approximately matching each other. The next pair...DIDN'T. It was ONLY then that I noticed that the cap with the substantially lower resistance (but not a full short) was, actually, BULGING a bit, as I'd hoped to notice from the outset, but it was very subtle. The bulge in the top was less pronounced than at the bottom, so it would never have jumped out at me without having desoldered them, so as to reveal them top and bottom. A trip to Radio Shack netted me the $1.66 replacement. By this time, I was quite used to plugging and unplugging the AC power cord from the guts that were sprawled across my table, and I had laid out the board on a piece of insulating newspaper with the "cold-cathode" lamps splayed out haphazardly around it. During all testing, on powering up, the power light would come on in a blinking mode, apparently indicating the problem status. I'd hit the button to see if by chance it was going to stay lit solid for more than a few seconds, but every time it would resume the blinking status after a few seconds. But now maybe it would be different...at last. Beads of perspiration built up on my forehead as I completed the resoldering of the caps I'd pulled. I restored the minimal external connections to the power-board and hit the power button...and was sorely dissapointed to see that it did ALMOST what it had done before. Now it looked like the lamps lit fully--but still would quit after the same brief duration. WTF? How much MORE time could I possibly spend on this?! It's impossible to make this a long-story-short at this point, but believe it or not, I'm editing a bit of the pain here. The next day, after several more hours of messing with it and hating that the dissassembled stuff had polluted my kitchen table to the point where I was forced to eat elsewhere, I decided I could at least put parts of it back together, even if I WOULD end up running it over with a truck or throwing it out on the freeway. Also, I wanted to see how the lamps looked now, during their brief "on" duration, but when back in place, shining through the actual screen. So I powered it up again after this partial reassembly, and saw...nothing. It was getting WORSE? Where was the lamp-light? I began to reassess my technique. What connectors had I maybe been too willing to assume didn't matter for testing this power-supply? I reconnected the chassis-ground wire. No difference. WAIT A MINUTE. I had dislodged a wide, fine connector from the back of the screen when I had been taking the lamps out a few days prior. But that shouldn't matter--I'm not sending the thing any data. Still, I'll reconnect it since I have to anyway. The excitement built, but no, STILL no difference. So this was getting weirder--why no lamps NOW? OK, just to be thorough, I reinstalled the video connector cable, to my laptop as before, though I had not needed this during the testing of the lamps while they were out of their ports...so why should it matter now? Well, it did, though I can't say why. The bright white lamp light, I was thrilled to notice, was peeking through two small holes in the back of the frame, and...it WASN'T GOING OUT this time! So...the $1.66 cap really HAD cured the whole problem; the rest of the issues were artificial problems caused by my ignorance in testing and reassembly laziness. Back to the basic bad-cap failure: I have NO idea what percentage of similar symptoms would be explained by this silly cap failure, but if I have this happen again, the first thing I will do is gat a bright light and a magnifying glass to inspect the caps for bulging. Even seeing nothing, I think I would remove the caps methodically, and either half-ass test them (as I did with less-than-optimal equipment) or simply replace them all. I'd guesstimate that you could buy all caps for about $20...though it would be a painful thing to do this and still not have a working monitor, I admit.

Posted on Apr 01, 2007

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Dear friend,

I just fixed my Viewsonic VA902b, here is how.

1/. Remove the LCD housing

2/. Remove e Main Power supply (label the 4 connectors for the 4 lamps before you unplug them)

3/. Locate the 1000uf-25v Cap (i think c806) check the top of the cap, if the top is buble up then replace it. I replaced my with 1000uf-35V 105 C, use the cap with long leads, solder it to the PCB and lay the cap down away from the heat sink (there should be plenty of room)

4/ check all solder joins, if it look like cold joins simply re-solder it

5/ when you are done, you can apply power to the board and check for the voltage at the cap, it should read about 14.7VDC

6/. Re-install every thing and it should be good to use again

Please pardon my english. Good luck to all

Posted on Jun 26, 2008

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I'm a monitor repairer, i have some of the lcd monitor information need to share with you. Most of the lcd monitor problem are power side(40%), inverter section(45%)and others problem are just 15%! When i repair the lcd monitor with no power, first, i will check the power adapter or power section and look at the electrolytic capacitor. If their no budged, then i will use the esr meter to check it. If there are no display or display come a while then shut off/no display, i will check the power secondary section capacitor, if capacitor ok, then check the inverter section. Before check the inverter section, please check their solder point( most of the time, they have a lot of bad point or dry joint on that section affected lcd monitor display darkness, no display or display come about 1 second then display cut off. If all solder point ok, then you need to check the component inside the inverter section, especially the C5707 or C5706, these part are high damaged rate, so when you get one of that c5707 faulty, then you need change a pair! not only that faulty c5707. Actually, when the lcd monitor before shut down, you can get some information on the screen. This information are use to help you know which part are defective! More info just try to www.fastrepairguide.com , you can get a lot of good lcd monitor repair tips!

Posted on Aug 21, 2007

  • Kent Liew Apr 03, 2008

    Just let you all know, this website are build by Jestine Yong, he a guru on repairing monitor and lcd monitor. Especially the LCD Monitor, he are wrote an ebook on LCD Monitor Repair with lot of picture to easily learning. Try and see to this website by

    http://fastrepairguide.com/p/lcd-monitor...

    Any comment, just let me know. I'm happy to hearing it.

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This is by far the most useless thread I have ever seen. Who cares if everyone has the same problem. Is there actually anyone who has a solution? 30 "I have the same problem" comments don't help anyone, and it just ends up wasting everyone's time because you think that 30 comments would mean there are a lot of good potential solutions to try.

I haven't read ANY solutions yet. I am not mechanically inclined. Resetting to default factory settings worked for a while, but it has started again, worse than before. I think I will have to get a new monitor.

Posted on Sep 29, 2010

  • Revail Oct 14, 2013

    hypocrite! Funny how you complain about posts and then post about exactly what you were complaining about! Just shh

  • Jason Fleischhacker
    Jason Fleischhacker Oct 20, 2014

    If your not mechanically inclined here is a solution Go buy a new monitor noob. There are a lot of solutions in these comments replacing Caps or inverter or lcd lights depending on your issue so stfu with your negativity that is the way to fix it but it seems you are kinda a tard so best you just buy a new monitor

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This is a FIX ONLY for Rosewill R710E 17 inch Flat Panel LCD Monitor! Symptoms: The LCD screes shows up for half second or more and turns black, but the LED light remains green and reflecting the light to the screen can be seen the screen working. Changing the 1000uF condensator at 16V should make work your back lights like new. Usually when this problem occur you will see malformed (has to be flat at the top) at the top that peace of bad condensator. The board on work for this issue is the inverter located at the left side looking from the back. NOTE*** To prevent any accidental damage of other boards unscrew the inverter and work independently with it, specially the part with the soldering.

Posted on Dec 09, 2006

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ITS THE CAPACITORS!!!!!! READ THIS POST IM PUTTING IT UP ON ALL THE OTHER LT916S FORUMS I JUST FIX MINE THAT HAD THE EXACT SAME PROB!!!!!!OK PEOPLE I GOT THE SOLUTION TO THE MAG INNOVISION LT916S GOING BLACK AFTER ANY LENGTH OF TIME BEING ON!!! I JUST REPAIRED MINE TODAY! THE PROBLEM IS THE CAPACITOR BANK IN THE POWER SUPPLY PART THERE ARE 6 CAPACITORS I HAD A FEW LEAKY ONES "NOT GOOD" THE CAPACITOR SPECS ARE AS FOLLOWS 470UF 25V 105 DEGREES C MEANING 470 MICRO FARAD/25 VOLTS I HAD A VERY HARD TIME FINDING THE 25 VOLT ONES SO I WENT WITH 470UF/35V 85 DEGREES C THEY MIGHT NOT LAST AS LONG AS THE OTHERS DUE TO THE TEMP RATING HOWEVER, IM THINKING SINCE THEY CAN HANDLE UP TO 35 VOLTS IT SHOULD EVEN OUT AND HEY, ITS WORKING SO FAR SO GOOD!! THE CAPACITORS ARE FROM UNDER A DOLLAR A PIECE TO A COUPLE BUCKS EACH. THE CAPACITORS HAVE A BOLD LINE RUNNING UP ON ONE SIDE INDICATING THE POLARITY. BOLD LINE SIDE IS "-" SIDE WITHOUT BOLD LINE ITS "+" THE POWER SUPPLY BOARD HAS THE POLARITYS STAMPED ON THE BOARD ITSELF UNDER EACH CAPACITOR. EASY 30 MINUTE FIX IF YOU ARE LEARY ABOUT SOILDERING, FIND A FRIEND THAT KNOWS HOW TO. ITS REALLY NOT THAT HARD THOUGH AND YOULL HAVE SOME DECENT ROOM TO WORK WITH. I PROMISE WHEN YOU OPEN IT UP YOU WILL ALMOST CERTAINLY SEE AT LEAST 4 OF THE 6 CAPACITORS BULDGING AT THE TOPS MAYBE EVEN LEAKING BROWNISH STUFF. DO YOURSELF A FAVOR THOUGH AND REPLACE ALL OF THEM WHILE YOUR IN THERE "THE SIX BIGGER ONES ONLY" IF ANY OF YOU NEED FURTHER HELP OR ANY OTHER QUESTIONS ABOUT THIS PROJECT PLEASE FEEL FREE TO EMAIL ME AT BTLEE26@HOTMAIL I DAMN NEAR WENT CRAZY TRYING TO FIND A SOLUTION ON HOW TO FIX THIS THING SINCE I SPENT OVER 300 BUCKS FOR IT NEW. AND IM BY NO MEANS A EXPERT WHEN IT COMES TO THIS STUFF BUT I DO KNOW A FEW THINGS. AS IM SURE MOST OF YOU DO. TAKE CARE YOU ALL AND THANKS TO THE GY WHO MENTIONED SOMETHING ABOUT CAPACITORS BEING BAD IN HIS!

Posted on Aug 21, 2007

  • Bryan Lee
    Bryan Lee Oct 27, 2007

    TO THOSE THAT DID NOT HAVE THE SAME CAPACITOR PROBLEM THAT I HAD, IVE BEEN TOLD THAT IT MAY BE THE INVERTER, AND UNFORTUNATLEY I DO NOT KNOW WHERE TO GET THEM OR HOW TO FIX THAT PART, AT LEAST GIVE THE CAPACITORS A VISUAL FOR SIGNS OF BULDGING AND/OR LEAKAGE. LIKE I SAID THIS WAS THE PROBLEM FOR MOST OF THE PEOPLE IVE RECIEVED EMAILS FROM. ALSO, TO GET THE FRONT BEZEL OF THE MONITOR OFF, UNSCREW THE SCREWS ON THE BOTTOM PART OF THE BEZEL, GENTLY PULL THE BOTTOM PART OUT FROM THE BODY OF THE MONITOR AND WORK IT UPWARD TWARDS THE TOP. IVE HAD A FEW PEOPLE ASK ME HOW TO GET THAT PART OFF CAUSE ITS A LITTLE TRICKY TO REMOVE BUT WORKING IT UPWARD SHOULD GET IT OFF OF THERE GOOD LUCK EVERYONE!

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@LuXOD The page you directed me to, were backup caps, not the ones you want to put in as a replacement! When you select replacements, you should match Capacitance, Voltage and temperature. Also, it's very important what current the caps are rated for. I checked your link to see if they sold caps that matched the specs of the ones in your board now. The MV-WX series Electrolytes seem to be alright. They match Temp, Cap and Voltage. And have a slightly better max Ripple current. And yes, it DOES matter how the legs are placed. These caps are polarized. Each cap has a "bar" going down on the casing with a Dash (minus) in it. This indicates the Negative pole of the Cap. Remember how the caps you take out are placed, and place the replacements just like this. You can always use the picture posted above for reference, should you forget. It doesn't matter so much if the legs need to be bent a bit, in order to get them through the holes. Try to get them as short as possible though. Goodluck!

Posted on May 18, 2007

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I had the same problem on my BENQ FP937 LCD Monitor.... After a lot of googling and looking and trying various solutions, I read one which said I may have a Dry Joint on on of the transformers on my Inverter Board. I grabbed the trusty soldering iron and reheated all the solder joints (particularly the coils/transformers)... Monitor has been working great ever since.... Thanks to whoever it was that suggested it to me......

Posted on Jan 29, 2007

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I have HANNS G HW191D with the exact same problem and can offer a less technical solution for anyone not willing to embark on taking their monitor apart. Now obviously this isn't going to work for everyone but it does work for me.

1. turn on your pc and monitor check the monitor is still misbehaving
2. turn off the monitor only
3. using a hairdryer on high heat for approx 3-5 minutes warm the rear casing and into the vents of the monitor
4 check intermittently to see if the monitor stays on

and thats all their is to it. Im no technician so cannot give full explanation why it works but i'd guess maybe it needs a better temperature to work in. and no i don't live in the antarctic, i live in the midlands in the uk!

Hope this is of some use to you guys, good luck

Posted on Feb 23, 2010

This problem is very often caused by dry electrolytic capacitors on the inverter board. If you have some skill with soldering you could try to change them. When buying new ones ask for LOW-ESR capacitors for switching mode power supplies (SMPS) and 105°C, they are a little bit more expensive than normal electrolytic capacitors, but are designed for this aplications so they lasts more. Normal el. caps will also works fine so when you cannot buy LOW-ESR for SMPS use normal ones.

Posted on Jan 30, 2007

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This applies to all CRT's: Turn your monitor off, then turn it sideways or upside down. Then turn it back on. If you get a picture when monitor is upside down or sideways, the problem is cold joint contact problem. Solder the big transformer (the big black one with red cable) again and it's fixed. It's high voltage transformer so remember to switch it off and verify that there is no dangerous voltage left before fixing it.

Posted on Oct 09, 2007

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I have followed solution 3 and it worked perfect for me (except I have replaced only 2 capacitors, because I could see that only they were damaged. To help of understanding solution 3 a little better I have uploaded a picture of my opened Acer Al1711 monitor, hope it will help. Link: http://www.mediafire.com/imageview.php?quickkey=8tl3tnzzzjz&thumb=6 Regards, Russian

Posted on Jul 15, 2007

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@The Boffin or anyone else... I have a Acer AL1711 which is broke, probaby the same problem as you had, the first 1-2 sec its fine picture, then so dark its almost completely dark.. I can se a little if the sun is shining... :D So i'm about to place an order with 2 1000uF 16V 2 470uF 16V to replace the probably damaged ones... Now to my question: When I'm gonna solder the new ones.. Does it matter how the the "legs" are placed... This is problably right?: http://www.elfa.se/elfa-bin/setpage.pl?http://www.elfa.se/elfa-bin/dyndok.pl?lang=se&dok=2012737.htm I'd appreaciate some help.. BTW The site is Swedish, and so am I.. :D

Posted on May 05, 2007

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My solution to this problem may not work for everyone since I live in a tropical environment where dampness is always an issue. I put a hair dryer on high and let it blow through the vents in the back for about 10 minutes. Eventually, the monitor worked fine. This is not the first time this has worked for me on a number of other issues where moisture was the culprit.

Posted on Sep 24, 2010

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Buy a new bigger monitor under warranty for $120 and enjoy HTML and HD, it might even wash your dishes if you get an upgraded model! They do NOT give *** though! ;o)

Posted on Aug 16, 2012

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Solution:

If you can, you must lower the brightness.

For my ViewSonic, it was 1, down, 2, down, 2, downdowndowndowndowndowndowndown...

I have made it my mission to spread this message no matter the cost.

Posted on Jun 02, 2012

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Hi i have a proview dc 12v 3.0a and i brought an cable with the vga one side and the other side hdmi i inserted the hdmi in my ps3 and inserted the vga were it is suposed to be when i open it shows me a bok telling me no cable inserted how could i fix this situation help please :(

Posted on Mar 05, 2012

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Gvision monitors failed

Posted on Nov 18, 2010

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Computer goes on, Monitor power goes on

Posted on Jul 15, 2010

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I had this problem with my ViewSonic VA902b desktop moniter. In my case, upon opening the machine i found that it was as simple as loose wires. Try opening it and making sure all connections are secure before trying anything else.

Posted on Jul 03, 2010

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HELP!!!!
I have the exact same problem for which others have found solutions, the monitor stays on for just about half a second then powers off. I checked all the capacitors from large to small and they are all in top shape, furthermore i checked for dry joints but there aren't any.

Posted on Jun 20, 2010

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I have a viewsonic VA902b 19" that had this problem of displaying for a fraction of a second then going black when powered on. I followed the solution posted by "Tienlen" & it worked perfectly. There's only a single capacitor of significant size on the inverter board; 1000uf 25v 105c & it was bulged & leaking a bit. All others were very small none looked bad. Radioshack did not carry a suitable replacement that operates at 105c. Found a local shop that had 1000uf 35v* 105c caps(with long leads) for about $3.99 a piece. Removed the old & soldered the new one in place. The monitor works perfectly now. An easy, cheap & quick fix if you're not intimidated by pcb's & a screwdriver. All told, it was about a 45 minute project with new parts in hand.

Posted on Jan 29, 2009

Viewsonic warranty is fir 3 years on LCDs, get them to replace it!

Posted on Sep 09, 2008

Fixed my LCD exhibiting these problems. Repairer said dry joints on circuit board was fault.

Posted on Apr 04, 2008

No, i had the same problem,
you may have something in the usb port wen u turn your computer on,
take it out and try again,
this should work.

Posted on Apr 03, 2008

No, i had the same problem,
you may have something in the usb port wen u turn your computer on,
take it out and try again,
this should work.

Posted on Apr 03, 2008

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Go to menu, geomotry an h/v postion

Posted on Jan 01, 2008

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  • WeFixYa Jan 01, 2008

    aspect

  • WeFixYa Jan 01, 2008

    over used it and need a new monitor

  • WeFixYa Jan 01, 2008

    aspect button

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The solution did work !!!!

I did replace the 4 electrolytic capacitors like mentioned by "The Boffin" and the TFT monitor is as new again.

 

I'm taliking about the ACER AL1711 monitor. After switching the power on the screen became black again after 3 seconds.

 

Regards, Peter Knol - The Netherlands

 

 

Posted on Oct 19, 2007

Unplug the monitor from the power supply completely. then plug it back in. i have the same monitor and it will not stay on when i reboot the PC unless it is totally disconnected from the power source.

Posted on Jun 01, 2007

Before I started any of the above solutions, I called Acer Technical Support at 800-816-2237 and was given information on how to send the product in for service that is covered under the 3 year warranty. I have had two monitors that have the exact same problems, within about three weeks. I expect to have additional monitors to send back in the near future, since we use Acer primarily here at work. Good luck all.

Posted on Apr 19, 2007

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It has a lot of factors...maybe check the nearest or the dimpliest possible factors like the CPU case through the videocard check it if it has grounded. When the metal of the videocard and the casing attached closely they will posibly grounded. Its not a problem its just grounded.

Posted on Mar 09, 2007

Bad CCFL tubes are probably not the problem. The suggestion that the CCFL tubes are bad would mean that ALL of the tubes went bad at the same time. LCD monitors have at least 2-4 tubes each. This is an unlikely scenario. The real problem is most likely bad capacitors on the power supply board. It's easy to tell. Disassemble the monitor so the power supply board can be removed. The bad caps are easy to spot becasue they will be buldged up on the tops. This monitor typically has 6 caps that go bad. Under $10 and about an hour of labor will fix it.

Posted on Feb 28, 2007

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My Acer AL1711 started to do this, the screen going to black at the first and maybe second switch-on but then it seemed to behave itself until the next time it was powered up. The brilliance was set at 80% so I tried lowering it down to around 50%. This eased the problem for a while but not for long. This to me suggests that the CCFL bulbs could be due for replacement rather than the inverter board as the latter will either normally fail when it gets hot over a long period of uninterupted use or it simply won't work at all.

Posted on Feb 23, 2007

This is a tutorial with pictures to solve the problem specifically for the hp f1503 pavilion. http://www.reddragonakai.com/Tutorial1images/fixamonitor.jpg

Posted on Feb 14, 2007

Check your AC adapter. Mine did the same thing and was fine with a new adapter.

Posted on Feb 03, 2007

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SOURCE: Monitor displays breifly then goes to blank screen

There is just no way you will be happy to hear it needs service or replacement under warranty.

Worldvet

Posted on Jul 03, 2008

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