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I have trutech tv when i turn it on there is picture n sound but all of a sudden screen turns black but there is still sound... what might b wrong with it?

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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/

Posted on Dec 09, 2014

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Posted on Jan 02, 2017

welcomejee
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SOURCE: my tv picture and sound turn on and then after a

Hi,
There are two possible causes for this problem, either back light inverter board stop working thus screen goes black as lcd screen needs back light to show its image OR if sound remains while screen goes black then it seems firmware issue.
Let me know is it Insignia NS-LCD42HD tv or any other model?
Do you get sound in tv while no picture?
Does screen show any on-screen display when tv lose picture?
Above info will help me to diagnose problem in tv and to suggest some solution.
Thanks.

Posted on Jan 22, 2011

  • 155 Answers

SOURCE: Vizio 42", have picture for about 5 mins then screen goes black.

also check the power cord wire coming from the back of the tv is loose from the tv side or perfect.

Posted on Oct 26, 2008

skotkolr
  • 558 Answers

SOURCE: Sharp LCD TV, Screen goes black sound stays on

Capacitors on the power pack are going bad they need to be replaced that should fix the problem.

Posted on Apr 07, 2009

  • 2 Answers

SOURCE: when I turned on TV, sound was ok, but there's a black screen

Same thing happened to me. I turned TV off. Then turned it back on holding down both On button & Source button & got the picture back. Doesn't fix it for good. But when it happens, I "fix" it the same way. Happened twice in last three weeks, I'd say. Better than junking it for now.

Posted on May 25, 2009

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