Question about JVC AV-56P575 56" Rear Projection HDTV-Ready Television

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BLUE tint instead of black

My picture looks great except when blacks are present which are replaced by a bluish tint. What happened and how can this be resolved? I can disassemble and solder just about anything so making the repairs myself wouldn't be an issue. THanks in advance for all your help. Mike

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Re: BLUE tint instead of black

This is an indication that the blue gun is being driven too hard. Have you tried to adjust the blue color control? If not try this first and if the control can not adjust the color then you will have to find out if the control grid on the blue tube is working and has the proper voltages present. Which you will need the following equipment to do. Multimeter Oscilloscope Along with these you will need a schematic to show you what the signals and voltages should be. And I might also suggest having a pattern generator and using the color bar signal since more then likely that is the one being used in the schematic as the reference signal.

Posted on Oct 04, 2007

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