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JVC LT-50A330 TV. Sound but no picture. Screen is blue

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  • JVC Master
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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.
https://www.youtube.com/watch?v=TR2iWN6b-LY
LCD TV Repair No Power Power Supply Common Symptoms Solutions How to...

Posted on Apr 07, 2015

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

skotkolr
  • 558 Answers

SOURCE: JVC LT-23X475 flat screen TV

capacitors are most likely to blame here, there are several that most likely are on the power board and are blown if you get them replaced the tv will function normally, the heat can come from the transformer since it is not getting smooth power from the capacitors. it is working very hard to dump the spikes in the electricity. I ups backup power supply rated for the tv's wattage will help smooth power and protect your investment.

Posted on May 27, 2008

sparky1500
  • 1066 Answers

SOURCE: TV screen went dark, but sound still there.

your backlight burnt out, this will be a maybe several hundred dollar repair. the screen is backilt by a very expensive flourescent light, without that light, the screen will be black.

Posted on Nov 28, 2008

  • 1779 Answers

SOURCE: JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound

You most definately have bad capacitors in the power supply. try and get it repaired as soon as possible, not an expensive repair that iv'e seen.

Posted on Feb 04, 2009

  • 105 Answers

SOURCE: JVC LT 42x688 no picture just sound

Sorry, this has no easy fix. The good news is you do not need an LCD Panel. The bad news is the Video Processor has a problem.
This TV has x3 Boards. The one you should replace first is the one in the middle. If this doesn't fix it, try the one on the right. The Part #s are on the Boards if you wanna try ebay.

Posted on May 06, 2009

  • 1 Answer

SOURCE: JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound

Hi , I have the same problem with my LT-42X688,so i called the service of my extended warranty provider . the TV technician just left and told me the motherboard is the problem. he said its the third one this week he has seen with the same symptoms. he ordered the motherboard and i've got to wait 5 to 7 work days before the part will be in . I will keep you posted when the guy will return.

Posted on Jul 21, 2009

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JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound


You most definately have bad capacitors in the power supply. try and get it repaired as soon as possible, not an expensive repair that iv'e seen.

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