Having problems with your Flat Panel Televisions ?

Today my haier Plasma TV (42HP25BAT) did a terrible click sound and post which the screen of TV went purple with out blue color and less brightness than normal. When there is no signal to TV , it displays blue but there are some black spots on the corner. Could you please help me as soon as possible ?



Answers :

Purple? Would that be magenta? That's what you get when you lose the green color. Lower brightness may be due a shift in one of the power supply voltages. I'm not familiar with the layout of this model, but the first thing I'd do is inspect the power supply to see if something exploded - possibly an electrolytic capacitor.

Another possibility is a high-voltage component on the plasma driver board. Check anything mounted on a heat sink (metal plate or slab with fins).

Are the black spots just in one corner of the display? Do they show up the same no matter what the program material is? If so, I'd be concerned that you had an arc inside the display itself and it is damaged. The arc could have taken out the green drive. It is possible that it's a problem in the video circuit, but usually that would show up as a bad row or column. (If it is indeed a fault due to arcing in the display, you may able to see a difference between the bad areas and the rest of the screen with a magnifying glass and bright light when the set is turned off.)

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