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Plasma X- and Y-drive confusion

Discussion in 'Electronic Repair' started by DaveC, May 3, 2007.

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  1. DaveC

    DaveC Guest

    Looking in the service manual for ViewSonic VPW-505, 50-inch plasma TV, these
    PCB descriptions are listed in the parts list:

    X-center-bottom
    X-center-top
    X-left-bottom
    X-left-top
    X-right-bottom
    X-right-top
    Y-drv-bottom
    Y-drv-top

    These descriptions seem to me to be wrong. Last time I cracked open a
    trigonometry book, X was horizontal axis, Y was vertical.

    The screen on this particular unit has problems (vertical bars) in the upper
    middle section which would indicate "center-top". But that is a "Y" control
    function, not "X".

    Shouldn't the PCB descriptions be transposed re. "X" and "Y"? Or do I have my
    alphabet all mixed up...?

    Haven't yet torn into the TV, but I'd like to identify which board is which
    function (and check availabilities) before removing "screw 1".

    Thanks,
     
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