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Black screen with sound

When I turn on my TV, there is picture but after a few minutes the screen goes black, but there is still sound. My tv is only a few years old.

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  • Sanyo Master
  • 6,694 Answers

Hi,
You Tv have problem with the backlight inverter board. This type of complaint can occur under two circumstances.
1.Faulty electrolytic capacitor in the power supply board
2. The back light inverter board.

If you have knowledge in electronics then check the power supply for any faulty or budged electrolytic capacitor. Have adde the picture of faulty electrolytic capacitor how it will look like. check the link. faulty capacitor .

If the are no such faulty electrolytic capacitor then you have to replace the back light inverter board. There is no repair possible with inverter board because its spares are rarely available.

You have didn't mention any model number of your tv. so its not possible to add the exact picture of the inverter board.

Ok

Posted on Feb 20, 2012

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Magnavox 30MF200V/17 No picture, only sound

Do you know if i can use an inverter from any LCD tv, or does it have to be specific to that model? I was thinking about taking an inverter from another broken TV.

Posted on Jun 23, 2008

  • 1 Answer

SOURCE: no picture just sound

Had the same problem, took the back off and found some bad soilder joints on two of the main circut boards. Re-soildered and appears to be fixed.

Posted on Sep 09, 2008

  • 1 Answer

SOURCE: No Picture in my 1 Year Old Polaroid FLM-2632 LCD TV

had the same problem. if you take out the power supply in the back of your tv ( easy to get to just a few screws in back to get to the box then a few more to get into it and some quick disconnects) you can take it to a local tv repair shop and they can remove the two green capacitors in the upper left of the circuite panel and place in 16v ones that can actually handle the power needed. do not try to do it yourself although the new capacitors only cost 2 dollars one wrong move and you burn the wires on the board. the repair man only charged me 54 dollars well worth it considering polaroid wanted to charge me 500 to fix a 2 dollar part that should have been recalled. they are in the busines to make money but if any of us did what they did wede be considerd con artist. final note since ive replaced the capacitors my tvs worked better than when i bought it

Posted on Oct 08, 2008

  • 53 Answers

SOURCE: Picture goes black but hear the sound

this is the problem related to display of ur TV screen...please contact the service centre...plz dont try to repair it urself..

Posted on Apr 30, 2009

romsky79
  • 822 Answers

SOURCE: screen goes dark after few minutes

check your LCD inverter maybe there is loss connection or some parts damage from inverter.

Posted on May 05, 2009

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