Question about Televison & Video
Hi all, Not sure who to ask! Symptom: TV turns on ok from 'cold start'. After about 30 minutes, the picture goes out. Sound is still there, ie we can change channels and everything appears to be working except the picture is black. The tv must be turned off and allowed to sit for about 30 minutes before it will work again. Seems to be a thermal issue. What I know: I've taken the back off the tv and watched it fail. The white lights, I'm assuming back light display, that I can see through the sheet metal frame all turn off at the same time when the picture goes black. Questions: 1. I'm assuming this is the back light display driver pcb. Any way to confirm? 2. Is there a schematic that exists of this tv so I know which part to replace?Just knowing, for example, that is the LCD driver card does not help me so much since I am not sure what card it is? Thanks in advance!
Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
Posted on Dec 06, 2014
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Posted on Jan 02, 2017
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snow basically is a symptom of weak signal.
as you say it becomes ok after 5 minutes or so there no question of any components gone wrong except loose or print intermittent
1 input weak like cable or antenna or loose wire from the source..
2 in tv antennae socket loose.
3 near tuner any thing loose or track loose.
4 cable wire might be old.
hope this will help.
Oct 09, 2007 | Televison & Video
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