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Panasonic VIERA TC-L42U5 42-Inch 1080p 60Hz Full HD LCD TV (Screen doesn't work)

Screen doesn't work, it's black and the only thing I see are grey linings and black. Everything turns on fine, I can see the red light when I turn the TV on. The audio works but still nothing shows.. Please help! I may or may not have the warranty because my friend gave it to me as a gift but I know for a fact it is still under the year warranty. What can I do?

Posted by Francisco Sang on

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The Knight

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  • Panasonic Master
  • 76,466 Answers

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Posted on Sep 01, 2017

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5 Related Answers

budmrtn

Bud Martin

  • 11361 Answers

SOURCE: Panasonic Viera HD LCD Turn it on, have power and

First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there are some troubleshoot you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Posted on Aug 21, 2010

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Anonymous

  • 1 Answer

SOURCE: i have a panasonic viera TH42PX80U and of corse it

I just got a new panasonic Viera 42" plasma and when its on the picture sharpness is not that good and looks grey is this right

Posted on Dec 26, 2010

virginiar367

  • 25 Answers

SOURCE: 5 year old panasonic viera

make sure your speaker to your sheron sound isnt to close to it .also if dvd player is the source then move away from tv will demagnatize the tv theres a magnet in them

Posted on Jul 05, 2011

OLUWASEUN SANYADE

  • 184 Answers

SOURCE: Panasonic viera Plasma TV model TH-P42X10A The tv

Hello,

The power supply board of the television is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

I hope this will help in solving the problem....

Posted on Aug 01, 2011

Prof  Henry

Ikenye Henry

  • 209 Answers

SOURCE: I have the Panasonic Viera

Press the power button on the remote if it does not come up then you return it for replacement.

Posted on Aug 11, 2011

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