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Fred, Unplug for a couple hours then try, if does not reset, board,capacitors or power supply gone bad.
Check the attached links for TV's problem.,
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www.youtube.com/watch?v=PWoz_-3OHIMJan 25, 2013 - Uploaded by Tampatec
I have a LG 42PM4700-UB plasma tv that just went black. The red power .... I have a RCA 32 inch it has no sound or picture !Just a light blue ...
If this is an LCD TV, show a torch light on the screen from a safe distance. If you can see the picture, the back light is not getting on. You may have to call in a qualified service technician.
Show a torch light on the screen (not too close) when the TV and program is running. If you can see the picture, the backlights have gone off. Anyhow, the TV needs attention by a qualified service technician.
Sounds like it is probably the backlight. Turn the television on and tune to a channel, then try holding a flashlight RIGHT up to the screen and see if you can see a bit of the picture.
That probably happened because something hit the TV and broke the line for pictures to get through, or because a wire in you TV is bad and doesn't wanna work. This happened to my TV every few days. What I did is give it a few whacks every now and then on top of it and the vision came back, but don't try that if you think your TV is fragile. Yes I know its sounds stereotypical but it actually sometimes works.
No sound and a digital picture. i will assume you have no signal on analog rf cable. Thomson(RCA) have been having problem with these sets. The trouble stems from the digital cuircit board. We see alot of these. You used to get the digital board.. they are not availble.. so rca found the component on these that fail.. A VERY SMALL surface mounted fuse. With a lighted magnifer and some fine tip twezzers. we replace these fuses on these boards. Do you have any soldering experence..
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