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When turn on the screen is black there was sound but we now don t have sound

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Sounds like you need to have the flyback replaced (part cost around $70.00)

Posted on Dec 06, 2008

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My LG tv will go on then after a few seconds the screen goes from black back to picture of and on a few times then shuts off. Help!


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Sanyo TV - black screen, sound find


The black screen on your Sanyo TV is symptomatic of power supply failure

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Vizio vw42l hdtv10a black screen no sound..please help!!!


The fact the Remote and the side buttons don't work may indicate a microprocessor problem in the set---some sets do have a option that locks out remote and buttons on set--

If you have not tried it, unplug set for a while and plug back in as if a power loss happened to the set this may allow the set to "reboot" and operate again.

Inverter will not affect the remote or buttons on the set. (Its like saying my car has a flat tire, will it stop the motor from starting?)

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1 Answer

My Samsung plasma tv got hit with a remote. Cracked in a star pattern now. It was on when it happened. Screen went black but still had sound. Turned it off and then back on and now no sound and black...


Most likely. It is probably in some kind of protection / "get me repaired at a really high cost" mode, this would explain why you had sound until you restarted it and it ran a brief diagnostic.

I don't think you'll be able to claim this on warranty as it is accidental damage, not a manufacturing error, but you never know! Maybe your home insurance will cover it.

Call Samsung and see what they say, the might be able to repair it for you or quote you the cost of a replacement.

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1 Answer

47LG50 screen light goes black after about 45 minutes of being on, sound still ok. Turn the tv off and back on and its fine for another 45 mins to an hour. The on/off light goes from red to blue-ish...


Good day!

That problem is commonly happens when the inverter board failed.

But before you replaced that its better to check this out first.

Just follow this simple and D.I.Y procedure on troubleshooting.

  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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1 Answer

Vizio 46" Gallevia Flat Screen


any display in the corners of channel number av etc ?? if you turn the volume up and down does that show on the display if not likely to be a dead panel

Dec 09, 2010 | Vizio Flat Panel Televisions

1 Answer

My tv has sound but the screen is black. At times


Ur LCD inverter board is dead.Must replaced the board.Usally a long board.

Jan 05, 2010 | Olevia LT27HVX 27 in. LCD Television

3 Answers

No picture, sound ok


I have a similar issue. Sometimes the entire screen goes black and sometimes only one-half - either the top or bottom half goes black. The only solution we have found is to gently tap the TV (usually the front side) and the picture will come back for awhile. It almost seems heat related as it only goes out after the first 10 minutes of use. There must be a fix to this.

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