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Toshiba TV model 32AF45 with Pincushion Type of Problem

Discussion in 'Electronic Repair' started by Brad, Mar 27, 2007.

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  1. Brad

    Brad Guest


    I have a Toshiba TV model 32AF45 (mfg. 11/05) in my shop (no SM)
    with what looks like a pincushion defect, with instability in the picture.
    Using a crosshatch pattern display, the display is wider in the top portion of
    the picture than in the bottom portion. The center area looks the best.
    There is some displacement "bands" ("band" consist of around 8 horizontal
    lines) in the top and bottom areas of the picture where these "bands" are
    displaced more than the rest of the picture.

    I soldered several joints that look like cold solder joints. R402 (68 ohm)
    was open and C410 (1uf 250V) was bad. I replaced these parts,
    but it made no difference. I checked other electroylitic capacitors in
    the deflection system circuit, plus some other parts.

    If you repaired one of these (or a similar model) with this problem, please
    tell me what was the cause. If I repair this set, I will post an "update".

    Thanks in advance, Brad

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