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-   -   Red and blue guns will not focus (https://www.askmehelpdesk.com/showthread.php?t=389267)

  • Aug 21, 2009, 09:24 PM
    long1
    Red and blue guns will not focus
    I have a Phillips 55pp93 5217. The picture seemed unusally bright and I couldn't get a true black picture. As I was adjusting the guns, I noticed the blue and green would not focus. Any ideas?
  • Aug 21, 2009, 10:12 PM
    KISS

    The screens in the tube or a bad tube. One unusually bright one, suggests to me a bad picture tube.

    It''s been a long time since I did convergence adjustments on a TV.
  • Aug 23, 2009, 12:33 AM
    DanielF

    How old is the set? Did the problem appear suddenly or gradually (over what period)?

    Power supply faults can also cause similar behaviour, giving incorrect tube electrode voltages.

    Daniel

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