Question about Televison & Video
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.
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:
Posted on Dec 10, 2012
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Posted on Jan 02, 2017
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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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
Tips for a great answer:
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