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Re: No picture No sound
Go to this website leave them an e-mail with your model number and your problem they let you know whats wrong with your power supply board because its famous for 4-5 capacitors going bad on the power supply board with this model 95 percent of the time thats what it is http://servicemanuals.vstore.ca/
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not a solution but i have a 50gx30b doing something similar, no picture no sound, 3 green leds are lit up on the main board and then one red led lit up also on main board, front panel red led stays on for about 30 -50 seconds and then it all shuts off, I then have to unplug and replug to get the same results.
There is a switch at both the rear and the front brake. The rear is a little easier to check, look at the brake pedal closely and you will see the switch. You can unplug the switch there and if the light goes out you found the trouble. The front brake switch is at the end of the brake handle and a little harder to check.
Sounds like the color wheel may have also gone bad. I recently saw a 56" Samsung where the bulb and color wheel went at the same time. The color wheel could produce a crying noise while trying to spin up.
there are three commom problems with this set one is light engine color wheel or power supply to get any of those is hard they are in back order but on some cases if the power is bad this could be fix bad caps on it if you want to get deep on it e-mail me [email protected]
I finally wet out and bought the tv repair manual. Thought the problem had to be more than the bulb because i was losing sound too. Everything in hte repair manual brought me to the bulb or the ballast. I ordered a replacemant bulb. I spent about 150, which included overnight shipping. I replaced the bulb just before Thanksgiving and haven't had any problems as of yet....