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ProScan PTK171 Pincushion/Width problem

Discussion in 'Electronic Repair' started by BWL, Mar 1, 2004.

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  1. BWL

    BWL Guest

    This set had a bad H.V. Block, which I replaced after a 6 month backorder;
    customer says pic was normal prior to going out. Now the Pincushion and width
    controls on rear right of chassis assy are inop, an pic is too narrow, and
    bowed in on sides. Convergence working normally. I know this is a pretty rare
    chassis (I've never worked on one before) Has anybody had one of these with
    this problem. If not, I'll order the schematics through schematics.com ($25.50
    in paper).

    TIA
    Billy
     
  2. Jerry G.

    Jerry G. Guest

    I would first investigate for high ESR caps in the pin and scan areas. This
    is a common fault in many sets.

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    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
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    This set had a bad H.V. Block, which I replaced after a 6 month backorder;
    customer says pic was normal prior to going out. Now the Pincushion and
    width
    controls on rear right of chassis assy are inop, an pic is too narrow, and
    bowed in on sides. Convergence working normally. I know this is a pretty
    rare
    chassis (I've never worked on one before) Has anybody had one of these with
    this problem. If not, I'll order the schematics through schematics.com
    ($25.50
    in paper).

    TIA
    Billy
     
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