Question about Samsung HP-R4252 42 in. Plasma HDTV

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NEED HELP I keep getting red dotts on the background of my screen. Especially on dark areas

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This is called diffusion, it is caused when the power supply voltages do not match what the plasma panel requires. Unfortunantly this is not something you should do yourself, high voltage danger and possible damage to the tv if you are not very experienced with this repair. A technician can however read the voltages and adjust them to specifications and this will get rid of the dreaded red dot diffusion. Very common in samsungs but not that expensive of a repair. Hope this helps.

Posted on Apr 02, 2008

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Panasonic plasmam troubleshooting


The condition of your TV called power supply overcurrent shutdown that"s why you hear a click. The TV is going into a protection mode to prevent further circuit damage. That's why it will not turn on or not powering up. I would concentrate on the power supply section board. Bad regulation of the incoming voltage could caused this issue although,there is a capacitor across the incoming line and nuetral.Maybe its leak or dry up and cause the problems,change it out with one of identical rating . Although now you are getting into dangerous area,especially if you have no electronic experience background. It could be also be a loose ,crack or cold solder joint,a blown fuse,fusible links or other component .It could be one of several boards.Unfortunately the level of sophistication on these TV make it virtually impossible to diagnose them further without taking them apart and probing around with a multimeter and other tools.This TV is handy enough to take to a repair shop find a good one.You will probably have to pay $75 to $100....

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Regards,
VOTIT

DON'T FORGET TO RATE:

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http://www.chemtronics.com/products/product.asp?id=78

and when the problem appears spray the can on each (ic or cap) part till the problem goes away.

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