Question about Sony KP-57WS500 57" Rear Projection Television

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Blue will not adjust

I used this forum to adjust the blue on my Sony KP-57WS500 last year - thanks everyone! I began to have the same problem again recently. But this time I believe that there can be no more adjusting. At first, I had the same symptoms as last year; the blue hue on the screen, then the tv shuts off. Then suddenly, I got a blue hue and a flicker but the tv did not shut down - all the functions on the tv work properly but now there is no blue in the screen at all. With the front grill off and the panel removed from the tv, I can look up and see what looks like three projection tubes. The red and green tubes are on but the blue one does not do anything even when I turn the adjustment pot. I know that something probably needs to be replaced but I have no idea how to narrow it down. Any ideas?

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  • 5,138 Answers

Bad Tube .

Posted on Feb 14, 2009

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