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PTK195Y06B pincushion problem

Discussion in 'Electronic Repair' started by bribieboy, Oct 8, 2007.

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  1. bribieboy

    bribieboy Guest

    My father-in-law has an RCA P52960 TV with severe pincushioning. It
    only appeared to happen after the local cable company changed from TWC
    to Comcast and they installed a new digital cable box. I think this
    is just coincidence but maybe I'm wrong.

    The centre is fine but the outsides are terrible. I have a pic I can
    send.

    Any ideas where the problem could be?

    Thanks
     
  2. systemtek

    systemtek Guest

    Is it possible you can try another TV ? It might be a fault with the
    TV or a rare fault with the cable box possibly. Maybe pincushion
    settings if the TV has any that can be adjusted, not familair with RCA
    stuff as im in the UK but some do have the option to change such
    settings.

    Duncan
     
  3. bribieboy

    bribieboy Guest

    OK. I bybassed the digital box and still the same. Also another TV
    works fine. Sorta points to the RCA. I haven't pulled the front
    cover off to see what controls are there. I've left there for now,
    next time I'm over I'll have a look.

    Steve
     
  4. Dani

    Dani Guest

    Check the convergence power supply, the board in the top right hand of
    the "light box"! Also, check the blue square high
    voltage capacitor, & large barrell diode in the pincushion correction
    circuit on the main board. Possibly, but unlikely, it could be the
    large convergence board bottom right hand side of the "light box"!
    Dani.
     
  5. AJ

    AJ Guest

    Check the PCC Diode and Capacitor, both in very close proximetry of the
    H-Output. Referred to as the blue square capacitor, if defective you will
    notice it may be a bit swelled on the sides, replace the associated diode
    also.
     
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