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Turn tv on picture comes on then goes out. But sound is on.

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Hello, It would be helpful for me if you send me the model number of your set...however the problem is either in the power supply or the inverter board...The power supply could have some swollen capacitors (capacitors are cylinder shaped components with a minus sign on one side. Typically a couple of them in the power supply will swell on the top causing the set to not fully start up. This requires taking off the back of the set to inspect for them. Let me know if you see the bad capacitors. If there are not bad caps there then the inverter is bad..So please send me the model number and I will know more. Thank You

Posted on Oct 14, 2013

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Posted on Jan 02, 2017

maatmartin7
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SOURCE: 47in Phillips-tv picture goes black still has

Could be the signal board has a bad cap, in this case it sounds like you are getting intermitten power to the inverters....when the tv goes down and of course you have audio....Shine a flashlight on to screen and see if you have a picture...look carefully. If this is the case..you have the above problem!

Posted on Nov 23, 2009

welcomejee
  • 10594 Answers

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

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