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Low width I have had several of these monitors for repair and all with the same fault and that is low width does anyone know what causes this ? and is there a mod for the fault

Posted by Anonymous on

  • Anonymous Jan 04, 2008

    3 leg dual series diode on heatsink to220 package was missing from board

    Replaced with normal large axial diodes in series under board ,no heatsinks, to test .

    It worked but horozontal width was over by about 1 inch and horizontal control would not work and pincushion control was limited but almost right..All other controls worked.

    Diodes got so hot eventually the solder melts and they fell off the bottom of the board after about 1 hour.

    Suspect diode was Fairchild ffpf60sa60ds to220f-3l.(stealth series)

    It might be 8amp 600volt dual series diode to220 package.

    I have never seen it and am battling to find an equivalent/substitute.

    I have seen similar in computer switchmode power supplies

    Any help appreciated





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Many low width problems are caused by a leaky diode in the yoke return circuit. Often in a to220 package on the heatsink around the flyback. Mike

Posted on Aug 07, 2006


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