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philips crt TV screen going off after power ON

Discussion in 'Repairing Electronics' started by rasika dharmasena, Jul 18, 2017.

  1. rasika dharmasena

    rasika dharmasena New Member

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    Jul 18, 2017
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    my philips crt tv screen going off when power on. it will remain only about 4 seconds and suddenly going off.. but power supply remain on position.. plz help me.. thank you
     
  2. RODALCO

    RODALCO Well-Known Member

    Joined:
    May 21, 2006
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    Location:
    Akld, New Zealand
    Check the ultor cap to the top of the tube, do you hear the whistling after switching on ? You may have partial discharge on it and overloading the flyback transformer. Check all high voltage wiring as well.
    Ensure the TV is unplugged from the mains, and discharge the ultor cap terminal to screen aquadag earth wire before touching carefully by inserting a small screwdriver with earth lead underneath the rubber dustcap.
     

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