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Green light blinks 15 times and the screen goes blank

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  • Televison & ... Master
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To try to help I need the brand and model number, you can also try to remove power from set and or a box if used for several minutes and then plug back to see if when they reboot the set works or not.

Posted on Dec 10, 2012

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Posted on Jan 02, 2017

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ZaneD
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SOURCE: Sony Bravia 40 inches has a defect

More then likely your power supply failed. If you do not hear a click from the relay during the power up cycle then your power supply failed.

Posted on Aug 08, 2008

  • 148 Answers

SOURCE: Display Standby/on light blinks red - screen will

Hi there, the green light upon startup means the circuit boards are powering up. At some point ( a bad capacitor in your case) the system "runs" into a bad component ( the capacitor) and this faulty component will shut the system down ( for safety reasons the tv has a built in device that trips the circuit when a problem is encountered), this in turn shuts down "the power-up" cycle and the unit shuts off and displays the red light again....You will need to call a professional to have the circuitboards checked out. You can, if you wish, open the unit and use my guide to help you locate and diagnose the most common problem with tv's having the symptoms you've mentioned....The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol! If this helped you any (or not) then please rate...Also I am very interested in your progress with this issue.fb6651e.jpg

Posted on Feb 07, 2010

  • 252 Answers

SOURCE: i have a sony bravia sxrd television and when it

You have a leaky capacitor in the high voltage section of your tv and it will eventually fail completely if not replaced. This is not an expensive fix $50. ballpark

Posted on Sep 24, 2010

  • 1 Answer

SOURCE: I recently fixed the blinking

i have the same problem. i just replace the power board because of the "green blinking" light. now, light stays green, picture comes on for a few seconds, then blank....

did you fix your problem.

Posted on Oct 07, 2010

  • 2 Answers

SOURCE: RCA L32WD22 Screen Blank, Green Light on

in the power supply you have six

Electrolytic capacitors you have to take the cover off the power supply to get to them. 3 of them will be 1000 uf @ 16v and the other 3 will be 1000 uf @ 35v the tops of them will probaly be bulged up replace those and that should solve your problem. you can replace all 6 with 1000 uf @35v and get them at radio shack for $1.79 each.

Posted on Nov 08, 2010

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The screen went blank and green light started flashing. Turned off the TV and let it cool. Turned it back on, getting sound but no picture. Red light is on, after about 15 seconds the green light blinks...


Since you say that there is sound but no picture, the first thing I would check would be the status of the lamp. I believe that the lamp has been shattered or the filament is blown. Please verify this and let me know

Feb 25, 2011 | Toshiba 52HM95 52" HDTV Projection...

1 Answer

LG 37LC7D HDTV just went blank. Screen blacked out and green light is on but no response to input change, remote, volume, or channel change. I've unplugged it for several minutes in an effort to reboot...


My lg 37lc7d is having the same problem. My backlight is on but no display. Also the standby light blinks several times then the screen goes on but it's just all black. No a/v

Feb 08, 2011 | LG 37LC7D 37 in. LCD HDTV

1 Answer

I recently fixed the blinking green light problem following advice here. Now, about a week later, when I turn on the tv, I get image for a few seconds and then the screen goes blank/dark. Green light...


i have the same problem. i just replace the power board because of the "green blinking" light. now, light stays green, picture comes on for a few seconds, then blank....

did you fix your problem.

Aug 31, 2010 | Sharp Aquos LC-37G4U 37 in. HD-Ready LCD...

2 Answers

My Sony KP-46WT500 screen shows the tv image in blue only for a few seconds, then it goes completely blank (as if it were off). Do I need to replace the bulbs?


It is rear projection TV that use 3 picture tubes of red-green-blue to show color picture on tv front screen.
Do you see standby red light blinking when TV shuts off after showing blue image for a while?
If red standby light is blinking, please count it how many times it blinks, there would be 3 seconds pause between blinks so count pause to pause and post it here to find out possible solution.
Thanks.


Dec 22, 2009 | Sony KP-46WT500 46" Rear Projection...

2 Answers

Picture & sound go on & off every sec, red light blinks 5 times


helloFive blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

shaun

Oct 25, 2009 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

What does it mean when that blinking green light turns to orange one in lp 350?


Hi
This would be "Standby"
When you press standby, the display and audio turn off and a blank screen is displayed for 15 minutes.
You can change the amount of time the projector stays in standby mode; see “Standby Time” on page 27 for details.
The LED lights orange while the projector is in standby.
• If you press standby again within 15 minutes, the projector returns to normal operations immediately. The LED changes from orange to green.
• If you press standby again after 15 minutes, there is about a 60 second delay before the lamp turns back on. The LED flashes green while the lamp is re-lighting.
• If you don’t press standby again, the lamp turns off after 15 minutes. The LED lights orange while the projector is in standby.
The full manual can be found here:
Infocus customer support
Infocus LP350 Manual
I hope these help
Mike

Sep 18, 2009 | InFocus LP350 Multimedia Projector

1 Answer

Dell flat screen started flashing, green light was blinking then screen went blank and green light is on. Tried unplugging etc...time for a new one?


No. It is not a Flat Screen issue. It is a CPU issue. You CPU is not sending signal to your flat screen so the green light is flashing. Try to:

1. Reset OR
2. Unplug the CPU case, Open the CPU, the interchange the RAM modules, OR
3. Same with step 2 but unplug and then plug back in all expansion cards like audio, video cards, etc.

It seems that your system needs discharging from a frozen state.

Regards!

Jul 26, 2009 | Dell E152FPc 15" TFT LCD Flat Panel...

1 Answer

KDS-R60XBR1 60" SXRD HDTV


I had the same problem if it is blinking 4 times like I think it is... it is a problem with one of the fans (there are 4) in your TV.. It is a simple fix... try using an air canister to clean them. It will require some disassembly though.

Sep 12, 2007 | Sony KDS-R60XBR1 60" Projection HDTV

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