Quote:
Originally Posted by pac.attack76
Turns on and display comes up. During this time, you can here what sounds like a voltage leak. A hiss. Then shuts off. What should I check on the power board?
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Check carefully the short pink and white wires (typical colors used) from the inverter board into the display. These are thin high voltage wires and sometimes they lay cross each other and will eventually arc a pin hole where they touch.
With the TV off, make sure none of the wires cross each other. If so, separate them and tack down with RTV. If there's a pin hole, a tiny dot of RTV will stop the leak although they usually don't arc if they're just separated.
If that's not it, there's a good chance your problem is inside the display - either a cracked or burned out CCFL tube. When they crack or burn out, the voltage across the dead tube will cause arcing, usually to ground. Once in a while, the end socket at the ends of each CCFL tube will corrode and cause bad connections.
There's also a chance of a burned out inverter transformer. Carefully look at each transformer on the inverter board and see if one looks more cooked than the rest. If so, the trans could just be bad or the CCFL tube it drives could be burned open which causes an overvoltage at the transformer.
John