Question about Dell E173FP 17" LCD Flat Panel Monitor

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Monitor shuts off but green light stays on

I have had the same problem as others seem to have had with the dell flat panel. After leaving the screen on for some time, the monitor brightens for a moment, then goes black, while the green light stays on. When I reboot, it works again for some time, or if I remove the cable for a few minutes and plug it back in (with monitor turned off) it will come back on...only to repeat the black screen. I have changed the power features, screen resolution, downloaded updated drivers from dell, and viewed dells troubleshooting advice on the monitor cd that came with the computer. Nothing directly advises on this problem, but I have read here and in other online message boards the exact same problem. Anyone able to fix this?

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  • 12 more comments 
  • happytree Feb 23, 2008

    My moniter turns on then the green light lights and before it can boot up boom click click it turns off and a yellow light goes on ( a stand by light I think) and I can't get the moniter to work . I did have to unplug things for a while usually when this happens I shut down and unplug and it will work not this time.

  • luke123456 Apr 20, 2008

    it keeps on going black i feel like that i have tryed every thing what do i do when my monitor shuts off repeatedly????

  • ids_flash Jul 26, 2008

    monitor will go into a blank screenafter about 2 seconds.In the 2 seconds you can see a good resolution screen and the monitor pop up screen will show
    the monitor active that is about it.


  • Anonymous Jul 30, 2008

    none except I shut off monitor light, wait awhile turn power back on, it comes on and then goes off again, try again and sometines it stays on and other times , I have to repeat steps

  • Anonymous Sep 05, 2008

    The monitor i just got given is this monitor after about 0.3 of a second it all goes black I am not pulling it apart as i'm not an electrical technician mine is the DELL E193FPc 19" i i start it up instantly press the OSD Button Any way there is a manual reset button anywhere someone has put it to sleep foor about 0.3 seconds it comes up CLEARFUL and bright enough but the screen goes pitch black i just manage to move my mouse a little across the screen then total blackness Weird

  • UstesG Oct 14, 2008

    same here...monitor goes black but green power light is still on. Thankfully I have an old monitor that works fine on the same pc.

  • playerr Dec 01, 2008

    when I put my computer to sleep or leave it unattended it shuts off for sometimes a whole day then it cuts back on by itself...I got a new computer but kept the old monitor...could this be a problem?

  • Anonymous Jan 11, 2009

    i cheaked

  • Anonymous Mar 24, 2009

    when turned on it will show an image for about 2-3 seconds at the most, and it is then swallowed by black. but if i look really closely the image is still there and still current, but there is no light behind it to show me

  • Anonymous Mar 25, 2009

    My monitor did the same thing.....I took your advice and adjusted the brightness.....it really works.....thanx

  • abrogers Apr 07, 2009

    computer is on, monitor is black but can see some images of the screen in the background. Green light stays on. How do you fix by download if you don't have a screen? message on screen when it comes back is:Analog detected.?Please help

  • Anonymous May 22, 2009

    I have the same exact problem, took it apart and didnt see any busted caps, so i imagine its a bad solder connection as usual, just need to find where it is.

  • antoniojelac
    antoniojelac Oct 05, 2012

    i have a syncmaster 920nw and when i turn my brightness down it dosent change the numbers change but not the light help me on this please PLEASE !!!!!!!!!!!!!!!!!!!

  • Anonymous Mar 16, 2014

    my flat screen dell 193fpc "19 the screen sometimes goes white and usually its very hot.when i open it and move a cable inside,the one that goes to the ad board to the power button,it seems to go away,but a few days later it happens again.
    why do those two problems happen and are they related?

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I know that this is going to sound crazy because it sounded crazy to me...but my monitor was doing the exact same thing and it was really getting to me, so I came up with an idea...somewhere in my brain I decided that turning down the brightness would help...so I turned the brightness down to about 57, and I have not had a problem since. I know all of these problems were posted a long time ago...but I hope that this helps someone out and saves them some money. I have a Dell LCD monitor and it fixed the problem right away.

Posted on Apr 29, 2007

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  • marcox111 Oct 10, 2010

    omg...this totally worked haha i absolutely did not think it would...it did though.

  • harazzahran Nov 26, 2010

    it's a brilliant idea,,, and it works well. Thanks for the help.

  • lauren3124 Sep 24, 2011

    How were you able to reduce the brightness when the monitor is completely black?

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Many flat panel screens have fault detection circuits that shut down the circuits. Most common is an imbalance in the inverter outputs due to failing bulbs or more frequently failure of one of the inverter branch circuits. Bad solder connections,weak capacitors, blown fuses, or shorted transistors can cause this problem. Replace the inverter circuit first, bulbs second and video circuit next.

Posted on Aug 15, 2006

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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 Aug 21, 2007

    CHECK CAPACITORS FOR BULDGING AT THE TOPS, THEY SHOULD BE FLAT IF THEY ARE BULDGING OR LEAKING THAT IS 99% THE PROBLEM REPLACE THOSE FIRST CALL SOME ELECTICAL SUPPLY PLACES IN YOUR TOWN /TV SHOPS/ THE MAG LT916S THAT I HAVE HAS SIX 470UF/25 V 105 DEGREE C. CAPACITORS THAT WERE BULDGING I COULD ONLY FIND 470UF 35V 85 DEGREES C. HERE IN MY TOWN THE GUYS I TALKED TO SAID THEY SHOULD WORK AND THEY WORK EXCELLENT!! IF YOU DONT WANT TO CHANCE IT GOTO FUTURLEC.COM AND THEY HAVE THE 470UF 25V 105 DEGREE C CAPACITORS FOR 25 CENTS EACH AND THEY OFFER MAIL ORDER IF YOU DONT HAVE A CREDIT CARD. I WAS JUST TOO DAMN IMPATIENT TO WAIT A COUPLE WEEKS TO FIX MINE SINCE IT WAS BROKE FOR A COULPLE OF MONTHS. I JUST HOPE THOSE HAVING THIS SAME PROBLEM READ THIS BEFORE THEY END UP THROWING THIS MONITOR AWAY LIKE I CAME REALLY CLOSE TO. AND IF YOU ARE ABLE TO FIX YOURS LET ME KNOW! IT WILL MAKE ME HAPPY TO KNOW I COULD HELP!!! AND IF YOU GO WITH THE 470UF 35 VOLT CAPACITORS YOU SHOULD BE FINE I WAS TOLD THAT THE 35 VOLT PART MEANS THAT IT CAN HANDLE UP TO 35 VOLTS THE 470UF PART IS THE PART THAT HAS TO BE THE SAME THE TEMP RATING IS 85 DEGREES ON THE ONES I PUT IN WHICH IS LOWER THAN WHAT WAS IN THERE, BUT SINCE THEY ARE RATED UP TO 35 VOLTS IT SHOULD EVEN OUT. LIKE I SAID I JUST GOT DONE FIXING MINE AND NO PROBLEMS WHATSOEVER GOOD AS NEW PROBLY BETTER SINCE THE ORIGINAL CAPS ONLY LASTED A LITTLE OVER A YEAR AND I DIDNT LEAVE THIS THING ON OR ANYTHING. AND FOR YOU DELL USERS, YOU MIGHT HAVE THE SAME PROB! OPEN THAT SUCKER UP AND VISUALLY INSPECT ALL THE CAPACITORS FOR BULDGING, TOP AND BOTTOM SHOULD BE FLAT AND CHECK FOR ANY LEAKAGE OF A BROWNISH SUBSTANCE. IF YOUR NOT GOOD AT SOILDERING GOOGLE HOW TO SOILDER ITS REAL EASY STUFF AND TAKE YOUR TIME! MAKE SURE YOU DONT GET SOILDER ON ANY OTHER PARTS THAN WHAT YOUR WORKING ON. AND YOU MIGHT EVEN USE SOME COMPRESSED AIR TO BLOW AWAY ANY SOILDER PARTICLES AFTER YOUR DONE. I WISH YOU ALL THE BEST ON SAVING AT LEAST A HUNDRED BUCKS OF YOUR HARD EARNED MONEY ON FIXING THIS YOURSELF LIKE I DID AND I ONLY SPENT $5.60 ON THE CAPACITORS AND TOOK A WHOPPING 30 MINUTES OUT OF MY DAY. IF YOU HAVE ANY QUESTIONS OR NEED HELP WITH THIS PLEASE FEEL FREE TO CONTACT ME AT BTLEE26@HOTMAIL.COM IF YOU NEED ME TO I CAN TAKE THIS SUCKER APART AGAIN AND TAKE PICTURES OF THE PARTS TO REPLACE AND SHOW YOU WHAT THE OLD DAMAGED ONES LOOK LIKE SO YOU KNOW WHAT TO LOOK FOR. TAKE CARE ALL!!

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I'm having the same exact problem...happened after a power outtage at my residence last weekend. I've talked to dell tech support and they suggested many things but none yet to help my situation. They sent me a replacement monitor but it has the same problem so then I thought it either had to be the video drivers or the connection so I uninstalled and reinstalled drivers for both my monitor and graphics card then updated them to the latest releases and no such luck...still did the same thing...so my last try was to switch surge protectors and it still is doing it...i'm really at the end of my rope...if anybody can help it would be greatly appreciated thanks

Posted on Sep 05, 2006

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Same problem
green light on but screen goes black

Try setting brightness less than 57%
It fixed mine

Posted on Dec 05, 2009

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I have the same problem with the Mag 17" LCD. noone, How do I go about the process of replacing the circuits?

Posted on Sep 07, 2006

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I recently decided to get rid of a couple of excess monitors one of which was a Dell E172FPt.

To check it was still okay I connected it up to my system only to find I had the same problem as many others whereby it started then after a couple of seconds the screen went black but the on/off switch stayed green. My other monitor worked okay when tested.

Following the advice on many forums I stripped the monitor but could find no sign of any components having blown or overheated that would indicate where the problem lay.

However on one site the guy said to try uninstalling the graphics adapter and then re-start and let your computer search and re-install the drivers for the adapter to see if it was a software rather than hardware problem. Low and behold when I did the screen worked flawlessly and still is.

I would add that I had recently run a programme that had automatically updated all my drivers and afterwards I had found an Nvidia programme in 'Control Panel' that had not been there before. After carrying out this guys recommendations this programme had disappeared.

It may not work for every case but try the software option first before you start stripping the monitor and replacing expensive parts you might not need.

Posted on Feb 07, 2010

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PROBLEM SOLVED,
CHANGE YOUR SURGE PROTECTOR

I had the same problem of monitor turning off while monitor's power was on. i read somewhere online that changing the surge protector id the trick and sure enough it did. the power cord that goes to the monitor and the power cord that goes to the computer both to be replaced into a new surge protector.
solved in 2 seconds

Posted on Apr 25, 2008

  • omid102767 Apr 25, 2008

    PROBLEM SOLVED IN 2 SECONDS FLAT



    MONITOR GOES BLACK POWER STILL ON



    CHANGE YOUR SURGE PROTECTOR



    it happened to me and it was fixed instantly

    mine was a flat screen as well



    this solution was presented by another somewhere on the internet ,,, spread the word guys.




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  1. Turn on your computer and imediatly start hitting the spacce bar.
  2. Boot in to the last known good profile.
  3. problem solved.
This only works if the computer stays on but the monitor shuts off after a sertain period of time.

Posted on May 25, 2010

  • TanTechMan May 25, 2010


    1. turn on your computer

    2. imediatly start pressing the space bar

    3. boot into the last known good prifile

    4. fixed

    this only works if your monitor turns on for a little while and then turns off, and your tower stays on.

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Thank you BNUTZBCRAZY you were absolutely right.

The solution to the problem of my monitor going blank after a few seconds was as he predicted - one of the capacitors in the power supply had gone 'leakey' and could be identified by its 'bulge'. I replaced the faulty item (100uf) with another of approximate value and problem solved. By the way, the voltage value of the replacement capacitor is of no importance as long as it is ABOVE the value stated on the original.
Again, many thanks to BNUTZBCRAZY!!!!

Posted on Jul 04, 2010

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BNUTZBCRAZY is totally 100% right, his solution helped me fix a Norcent 17" LCD monitor. I opened it up and sure enough there was the 470uF 25V 105C capacitor with the bulging top. This monitor, and another of mine, just have one capacitor like that but exact same specs. And much like BNUTZBCRAZY, I was able to find a 470uF 35V 85C capacitor easily at my local Radio Shack for $1.39. The replacement had axial terminals (one out each end) but I was able to bend them in a way that they fit the original spot easily, just make absolutely sure to get the polarity correct or you will blow your capacitor and possibly cause more severe damage. There is a Wikipedia entry on electrolytic capacitors, look over its polarity section if you need any help matching up your cap to the symbol on your circuit board. Better yet, take careful note of the polarity of the existing one before you remove it, and then double check that with all other symbols and indicator marks. Big ups to BNUTZBCRAZY.

Posted on Jul 14, 2008

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Yes, its the barrel shaped components on the power/inverter board. The tops have a cross stamped in them so it bulges/blows before the cap actually pops, shooting the top into the back of the LCD. I had one pop in another device and it sounded like a firecracker! If they are bulging or starting to show a domed top, replace them. There was a huge rash of these sub-par caps manufatured in the late 90's and have found themselves into many new devices.Planned obsolescence? These smooth out DC power and if they quit, they either open the circuit or foul up the DC power so bad that the inverter shuts down and never lights the lamps. At least look into it, they are cheap and pretty easy to replace. Just desolder, **** up the solder in the hole, put in the new ones and resolder.

Posted on Apr 07, 2008

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Mine does this stuff to and it is a gateway monitor is it easier to fix it or should I just get a new one

Posted on Nov 13, 2008

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The actual answer to this problem is really quite simple, get a new video card or don't use the dvi output on the card. Several manufactures were known to make cards dual headed that were not true dual heads and therefore the dvi output is not a true dvi output and the monitor will suspend or appear to suspend at random intervals because of the lack of needed connection of the dvi. i have also had this issue and buying a better make card solved it.

Posted on Apr 30, 2010

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monitor shuts off but green light stays on - noavatar_s.gif umustbkrazie His answer fixed my problem. It was hard to see and it took me turning it on and off a couple times but i finally got it. Thanks alot!!!!!!!!!!!!!

Posted on Dec 06, 2009

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I was able to do some resurch because of my owen monitor,Try putting a exchanging video cable first.This will tell if your cable is good.If it passes,Next put the monitor on a diffrent computer that you know that the monitor of thar computer is working .If at this point your monitor is still acting up with the blank screen .the problem then is in the internal component of the monitor.HP flat screen monitor
have the power supply intergraded.

Posted on Nov 13, 2008

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I have a Dell 17" with the same problem.... All caps on the supply board look good (flat top). The screen has 4 long and thin fluorescent tubes two on the top and the other two on the bottom. I noticed that only one of the 4 tubes was turning on when powered. I switched the connectors thus testing all 4 tubes and they work (for a few seconds if connected where the "good" one was). There's obviously something wrong with the high voltage circuits on the board. As noone suggested, there are protection circuits on the board (there's an TL1451ACN on the board which apparently controls the oscillators). Does anyone has a schematic for this board. It says "BENQ" on it....

Posted on Sep 05, 2008

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I opened my flat panel monitor and noticed the Rectifier's leads were discolored and black-ish I googled the little numbers on the diod and discoveded it was called a rectifier. I found one very similar in Amps and out put volts to the one I had at the local RadioShack. This didnt break the monitor but it still had the same problem, power on with info on the screen lite up and then going black with the green light still on, I have come to the conclusion that there is indeed a problem with the power supply to the monitor. I found a web stie called hackaday and a person had the almost identical problem with an eriely similar monitor. they took the power supply out of the monitor and connected an old tower power suppy to the wall mounts on the back of the monitor. there are eight prognes that need to be connected and you can take care of them with two leads from the tower power suppy. I searched on E-bay for an Identical monitor with a cracked LCD to simply take em both apart and swap the good parts. I noticed that people were selling the very same monitor with the same problem I was having. they simply used bad parts in makeing these monitors.

Posted on Jun 04, 2008

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I think that I might have figured it out. I was having the same problem with my hp flat panal monitor. First I pugged it in. It wouldnt let me go to the monitor menue because it sayed "input source out of range" I figured out that I had to change my resolution, but I thought there had to be something still wrong with it, that was to simple. It let me into the motitor setting after I canged the reslution on it. I went through every menue and submenue that was on there. I found one called management, went in that and went to sleep timer, the sleep timer time sayed 00:50 and it was turned on. It must be like that on default or something, I never turned it on. I turned it off and my monitor has been working for about an hour now without turning off. Usually it would last about 10 to 20 minutes. Just try that it might work. I have had this monitor growing dust on it for over a year. Im happy Finally got to motivation to try and figure it out.

Posted on Apr 10, 2008

I have an ACER AL1916W LCD Monitor--- I believe the power supply board is bad-- Im looking to9 indeitfy a specific chip...it's an P605 BZ6L2N. I can't find info on it anywhere... Can anyboby help?? THe Power supply board is

Posted on Apr 09, 2008

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IT IS THE CAPACITORS.  Go to Radio shack and get the replacements for $10.  The replacement is not difficult, just be sure to get a roll of the desoldering braid to remove the bad capacitors.  Thank you so much for posting the fix.  I have 2 of these monitors, and both are now up and running again!!!

Posted on Oct 20, 2007

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If you have another LCD monitor around that works with similar specs on the power adapter, you may also want to try that too (FIRST MAKE SURE VOLTS, AMPS, and POLARITY ARE IDENTICAL). If volts or amps are within .5 of the other, that should probably be okay (it was for me). Bottom line, at least so far, when I had the 2 second visibility problem (after which it would turn off), trying this other adapter seemed to fix it! Strangely enough, when I went back to the first adapter right after the monitor was also still okay for the time being. You can also try brigtness down to 40-45 just to see if it helps. Still trying to determine how permanent a fix this will be for now, but at least it's something else for you all to try if you have the opportunity.

Posted on Jun 24, 2007

I was having the same problem, where my display screen would go black. If I was typing when it went black, it would continue to type in or change web pages that I might click on for the few short seconds that it displayed the lighted screen. I figured then that it was responding to my computer even though the screen was black. I tried everything that was suggested to me, but of no help. It would stay on for a certain period of time, then black-out. Unless I turned off my computer and started it up again, it would not stay lit. Someone suggested that it was my video card that might be bad. Before I checked about that, I tried going to my video card (NVIDIA GEForce 6150LF). I pulled it up and tried to update the driver for that. After I did the install for the update,it stayed lit, but then kept flickering (which it didn't seem to do before)I tried to update the driver for that again, and it came up that it would uninstall all the previous components that it needed to and then would update the driver. After I said yes to that, it updated it with SP26787 driver I guess. That is the number it said.....then the security system came up and said that it had updated the system. The screen kind of jumped and from then on it seems to work okay. I have used it quite a bit today for the first day, and it has not blacked out on me at all. It seems to have fixed the problem (cross my fingers). I have a MAG Innovision monitor only a couple of years old (19") and a HP Compaq tower and HP keyboard. I have Windows XP for my program. I don't know if this will help anyone out there that is having this problem, but I thought I would pass on what seems to work for me as of now. I was getting very frustrated with the situation. Good Luck Kathy

Posted on Jan 15, 2007

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What are the numbers of the capacitors???

Posted on Oct 13, 2008

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SOURCE: monitor shuts off but green light stays on

there is no solution a chip is fried i just opened mine up it blows

Posted on May 22, 2009

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2 Answers

Dell ultrasharp 15 inch flat panel lcd


It totally sounds like the backlight is toasted. If that is the case you will have to replace them. Normally if the power inverter is shot, the monitor will power up briefly at least and then shut off. If you can use a flash light and see some sort of image on the screen you know that your VGA chipset works however your backlight(s) are burnt out. If not, more than likely your power supply (power inverter chipset) is broken and needs to be replaced..

Mar 28, 2007 | Dell UltraSharp 1704FPT 17" Flat Panel LCD...

1 Answer

Black screen


Try pressing the 3rd button, as it toggles the Analog or Digital inputs...

Oct 05, 2006 | Dell 1703FPs 17" TFT LCD Flat Panel...

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