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Re: Samsung Plasma PPM42S3 Dead
I would suspect a problem with the power supply board (the switching power supply) or the power connection to the ignition board. You will need a schematic and a multimeter to test the power levels on the board. I would suggest that you take this TV to a qualified TV technician for repair, since there is a possible shock hazard involved.
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Plasma screens do not run out of gas, this is nonsense, there could be several reasons why you have no picture such as a fault in the sustain board. There is the possibility the screen could be at fault also but not for the reason stated previously. Go to a reputable repair centre & ask them to estimate the cost of repairing the problem. If it is the screen then it would not be worth getting fixed, but as I said there could be another cause.
You Probably have a bad Power Supply. But the X-Main bd,Y-Main bd could also be the cause of the malfunction. I have seen many times that all three bds can be bad. You need to have a trained Samsung tech troubleshoot the set.
yep, do u have a digital multimeter? if so, measure all the voltages from the power board located top middle. if u look at the top right of the panel, there is a sticker with va, ve, vset, vsc settings. ground the black lead, and use the red lead to read each of the settings on the pow bd. if there are more than 2 mismatches, its your power board and needs replaced.
This looks as if a component has become thermally sensitive. The best way to find this is to use component cooling spray. It looks as if the problem is localized to the tuner section. Take the back off of the TV and turn the TV on, wait until the problem occurs and lightly spray the tuner section with the component cooling spray watch for any reaction, then if this does not work spray the Microprocessor and the LVDS section and watch for a reaction. The set should go back to normal when it does that section is the problem, try to localize the problem to one component. Then replace that component.
Sounds like your power transformer is going bad inside the unit. Time for a repair man to visit you. Be warned, it's not going to be cheap. If you have a battery backup on your computer, try plugging the TV into that and see if it continues to shut down. If so, it's definately time for a repair man.