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LCT TV picture blurry with black smudges until it warms up

The tv is about 5 years old and will have a large portion of the screen obscured with blurry, dark "smudges". This will last nearly 20-30 mins until the tv has "warmed up", and then the picture quality is as good as usual.

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  • Al B Gladwenitzfixt Dec 09, 2012

    LCD TV, that is. It's a JVC 42". I have seen others posting that the "T-CON decoding board" or some other board. Not to steer the solution in that direction, but is there a way to confirm if that is, in fact, the problem?

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  • Televison & ... Master
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No easy way short of monitoring with a scope and or voltmeter, based on age of set I would first "look" at all the filter caps in the main power supply--bad ones when they get hot can regain some function:


LCT TV picture blurry with black smudges until it  - 12_10_2012_3_40_01_pm.jpg12_10_2012_3_40_21_pm.jpg

Posted on Dec 10, 2012

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SuperTech-11
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SOURCE: hi i have a 42" LG lcd tv .When i switch it on

the inverter for the backlight likely has a bad capacitor or more. The fluctuating high voltage is causing the jumping and eventual blackness until sufficient charge is on the caps, at which point it stabilizes...it eventually will stay black unless the caps are replaced.

Posted on Mar 05, 2011

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bluenadas
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SOURCE: Philips 42PFL3603 tv sound but no picture.

Hold a flash light to the screen after it goes off and see if you can see a faint picture. Sounds like your backlight might be cutting off. Repair can be expensive but some of the newer units don't require the entire LCD to be replaced.

Posted on Sep 27, 2009

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