My TV stopped working today. So I am trying to figure out if I can fix it myself. This is the picture of the power board. When I apply the power I hear two relays (at the bottom) clicking on and off with equal intervals. Visually all components look normal. Does anybody have any tips for me where to start troubleshooting this problem or should I just order replacement power board.
My late father used to say there were only 2 things he wouldn’t fix:
[ol]A toaster, because it was nearly always cheaper to replace than to fix, and
A color TV, because when they fail, there’s usually more than one thing that goes wrong, and as soon as you fix one thing, you’ve got to chase down the next.[/ol]
Of course, this was before flat screen TVs, and with the big CRT jobs, there was also the issue of components maintaining a sufficient charge to easily stop your heart if you touched the wrong thing (not sure if that has changed with LCDs and Plasmas or not).
Seriously, though. Without knowing for sure that the problem is in the power board, buying a replacement could be completely wasted money.
Is there a reason you suspect the power board, apart from the relay noise? Have you done a search for similar issues for your model of TV?
My father lost 1/2 inch of his finger by working on a CRT TV it just melted away due to the high-voltage. LCD and Plasmas can contain CFL backlights that need a high voltage too, so you better watch out