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Samsung rear projection TV.

Discussion in 'Electronic Repair' started by Dani, Oct 18, 2007.

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  1. Dani

    Dani Guest

    Model # HC-P4252W, Chassis # P59A, customer was into the service menu.
    He said he psessed a button, while in the service menu, then a single
    crosshatch came up with factory
    data, then it wouldn't work right after. Now, after repairing the unit
    for bad convergence IC's,
    & open resistors, when pressing "self focus", it stops, right after
    it starts, & says "check
    factory data". How do I undo this! Also, now the "saved" convergence
    adjustment in the service menu, "drift". After tv is off a while, the
    left, & right sides need to re adjusted manually again. Dani.
  2. AJ

    AJ Guest

    The DAC is mounted to the Signal board on most of these sets, make certian
    you don't have any coolant leakage on the signal board. Also confirm good
    quality connections between the DAC and Signal board. The registration data,
    once it has been properly saved, should not drift
  3. Guest

    He owes you $200 to get the set back now, tell him it is $400 for the
    full job.

    Samsungs' service menus are not very friendly, and he probably reset
    it to pre-alignment facotry default data. He shouldn't have been in
    there. He pays, either that or take your parts out and send him on his
    way. If you are an ASC you should have the info to do a full
    alignment, if an independent you better have some time on your hands.

    Take his money and let him go figure out what he screwed up. The
    circuit has been repaired.

    On any three CRT based RPTV that has self focus, magic focus, flash
    focus or anything of the sort, there are sensors around the screen. As
    such, geometry settings are very critical. If he lost those, even if
    you are not seeing any major geometry problems, you might have to buy
    the overlay to get it right.

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