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Inverter board How did you know it was the inverter board? I am pretty sure thats what it is and want to fix it... but I don't want to order the expensive part without some way of trouble shooting? Any ideas.

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My problem matched the description on here and on lcdparts.net and from a seller on ebay. So I took a gamble and tried it and it worked. It seemed such a specific problem and matched so well I thought it was a pretty good chance of working.

The problem that I saw was that the TV would come on fine for a short time (a few seconds to a few minutes) then the screen would go black (no picture or even backlight glow). The sound would continue and the TV responds to the remote, but no picture. If turned off and back on the picture would reappear for a short time.

If I was wrong I thought I could probably resell the part, so I wasn't really risking the $150-$180, but something closer to the $50-$75 diagnostic fee that most of the repair places were quoting me. Good luck with your problem.

Posted on Aug 12, 2008

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Posted on Jan 02, 2017

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Which replacement board to order to fix LCD with no picture, but sound.


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

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I have a tv that the screen goes from very dark to black. Sometimes the screen will come back on sometimes not. Everything else works fine. Can you please assist me with what the problem would be?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

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I just got a Samsung LN40A500T1FXZA 40' from a friend. He was going to throw it out but I told him I'd take it... Anyway... I am having a problem with it. It is pretty much a combination of all the...


The tv have 2 long LCD inverter boards are dead.These 2 long LCD inverter boards help the tv LCD screen panel to have a backlight to produced a picture.That why u have audio only no video.Tries websites like Shopjimmy.com,Ebay.com to buy those 2 long LCD inverter boards for the replacement.

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My sanyo hdtv shows no pictures when you turn it on (the screen is black) but you can hear the audio. The remote control can change the channels and volume up&down but the picture won't show


Good day!


The problem of your TV could be the inverter board or the cold cathode light is busted.

Follow this instruction on how to fix that problem:

  1. Remove the back cover of your TV.
  2. Look for the Inverter board.
Inverter board looks like this:
nineng_6.jpg

3. Check the input voltage of the inverter board if have 24vdc.Using multimeter (range on DC)
4. If you have 24vdc,check the output voltage of the inverter board it should have 500vdc.
5. If you don't have 500vdc output on the inverter,replace it.
6. If the you have the output voltage on it,the problem could be the busted cold cathode light (C.C.T).Replace it.

I hope this solution will be helpful.Thank you and don't forget to rate my answer.

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I have a Polaroid 42" TLX-04244B. When turning the power on the polaroid logo comes on for a sec. then screen goes black with the blue power LED staying solid. Im pretty sure the power suply board isnt...


The Inverter is trying to produce the high voltage to light the backlight. It looks like it cannot hold the charge to maintain the high voltage level in order for it to stay on - you get a momentary display at initial power-up thus see the logo. Replace the Inverter board.

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I have a 32" Samsung LCD. When I turn it on the video shuts off after about 45 seconds to a minute and the audio stays on. Would this be a video board problem or something else? It is not under warranty...


This problems is.It the LCD inverter board it dead.The LCD inverter board it dead,that why u not getting a backlight to see the picture,but only 45 sec. Tries Websites like Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter board for the replacement.It a long board in shape.

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Your TV is in Protection Mode right now. A part inside the TV has failed and the TV will not turn ON to prevent other parts from being damaged. The red light blinking is an error code for diagnosing the problem part on the one of the power supply boards. The problem boards that need to be looked at is the Backlight Inverter Board or the Main Power Supply Board.
There is a slim chance you can leave the TV unplugged for an hour so the TV can discharge and reset itself. But other than that, I would use the warranty if possible. The TV repair shop maybe expensive, so get some price quotes to see if it worth the trouble.

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Audiovox fpe2705 inverter board replacement


You need to verify first that you do have 24vdc feeding the inverter boards, if you do have 24vdc then we can be sure it is the inverter boards. The inverter board will have very small surface mounted fuses, check for that also.

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It is not the inverters. I changed mine out and it did not fix the problem. I am stilll troubleshooting the boards, but I am 100% positive that it is the power supply or the main video control card. The power supply is the easiest so I will post if I find anything. It might be the controller IC that is on the board, but if it isn't...no schematics to troubleshoot the other card so we're all out of a tv

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