Question about Televison & Video
You could have a dry joint on board or screen voltage could need realigned.
Sounds like a bad pc board contact that occurs when something warms up.
Best to ask your dealer to see if it can be repeared.
Did you try what we did in the early days of tube radio and tv? (Just a big smash against the housing).
Sometimes works, but does not solve the problem.
Don't you have a dealer around?
You can ask a repair shop for the price of your pc board, but why don't you ask them for a quotation first? May be they can repair the board (I frequently repair boards).
The price for spareparts and boards depend on the supplier, and change between brands and screen sizes.
Note : that the sound has no problem indicates that the fault may be in either part of the power supply for display, or in the video processing and display section itself.
Posted on Jul 20, 2009
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Posted on Jan 02, 2017
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