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Screen all blue

Switched it on and got an all blue screen one day (red and green are there but flash)
popped the back cover off and you can see the red and the green tubes flashing really fast, but the blue just sits there bright with no flashing.
i can cure it temporarily by swapping 2 colours on the back of the focus block.
There is no noise and the tv still takes the same time to come on as normal.

Any ideas whats causing this???

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  • FunkedUp Mar 31, 2008

    ok thanks for the suggestion I will check. Any idea on rough cost to fix if this is the problem?

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  • 8,617 Answers

Try looking into the blue CRT lens while its on and see if the coolant has congealed. You will be able to tell if it has bacteria growing as this can cause the blue to be unresposive and make your screen have a blue haze. The coolant will need changing if this is congealed with bacteria. This is a common problem in all projection tvs blue and green are more prone to this sympton red is not.

Posted on Mar 30, 2008

  • Sonny Berry
    Sonny Berry Apr 01, 2008

    a repair shop will charge about 300 to 400 to do it. However you can do it yourself in about an hour per tube. Its very easy and I am compiling a file with instructions on how to do the coolant change that will be available at my other site in a day or two.

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Posted on Jan 02, 2017

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