Question about NEC PXT-50XD2 50 in. Plasma TV
Buy one of those spray from radio shack or other electronic store. It comes in a can and sprays cold gas to cool electronic components. Open the TV and see which of the aluminum heats sink gets the hottest. Spray the can on the suspected one. Once you find out which one it is. You can carefully add more aluminum heatsink so it will dissipate more heat and prevent shut off. You may have to rig up some screws and nuts. you would need to position the additional heat sink in such a way that it wont touch any live components. I have worked on an HDTV with the same problem and it worked great. The aluminum heat sink are there to dissipate heat from semiconnductor device but sometimes the design is flawed by not having enough surface area to dissipate heat or it have just the exact surface area and not enough room for slight increase in temp. Sometimes component value changes slightly causing the circuit to work slightly harder but not enough to cause an immidiate shutdown. Adding more heatsink to the suspected cause of shut down to let it work slightly cooler is probably the best solution.
Posted on Jul 03, 2010
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Posted on Jan 02, 2017
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