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Lg42 578v no picture

Tv 5 months old picture just went off ,sound is still on.

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  • LG Master
  • 3,320 Answers

If your LCD TV or monitor has stopped working, or is displaying one of the following
symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can
examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life
of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.

Posted on Apr 12, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1810 Answers

SOURCE: Was watching TV and the picture just went black (still had sound)

eithor the flyback just craped out or the tube went
try turning up the flyback failing that call a service tech and ask for a quote
quote cose 30-50 bucks
atleast you will know forsurre if it's worth fixing

Posted on Aug 06, 2009

budmrtn
  • 11361 Answers

SOURCE: tv sound but no picture

The backlight inveter board may have gone out ,or the power supply is not working to supply power to the inverter board, those are the two places to look.
http://en.wikipedia.org/wiki/Capacitor_plague

Posted on Nov 08, 2009

budmrtn
  • 11361 Answers

SOURCE: No Picture on 5 month old tv.

If the screen is just showing white screen, no text, no picture, then the problem cam be in the LCD controller board. I would get this fixed under warranty ASAP, nothing should have gone wrong yet. You may have a lemon, this is not a no name set.

Posted on Jan 02, 2010

  • 8457 Answers

SOURCE: NO SOUND GOOD PICTURE TV IS ONLY 5 MONTHS OLD

Unplug,replug the tv back about an hour later.Go into the tv menu,go to SOUND,go down to reset it to back to factory setting.The sound now should return,not,than ur tv the Tuner board have problems,call for warrenty serviced.

Posted on Jun 28, 2010

  • 375 Answers

SOURCE: 32" ALBA 15 MONTHS OLD.

I am afraid it sounds as though either your backlight or power inverter has gone faulty, may be worth contacting alba to see if they will honour the warrenty (unlikely but worth a go) otherwise maybe try your home insurance to see if its covered, failing either of these options, if you feel confident doing so, disassemble the tv and look for any signs of visible damage (capacitors leaking or any components looking burned or scorche, and replace. Try looking for any panel markings which will allow you to search for a price to replace the whole unit.
Unfortunately I cant give you and hard and fast cure, and it is very difficult to tell whether it is the inverter or the backlight has gone (having said that, if you are getting picture at the very beginning, it may suggest that the inverter is getting the power to the backlight ok, which may suggest its the backlight at fault.)
Hope this helps.

Posted on May 07, 2011

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