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Sansui TVM 1915 vertical question

Discussion in 'Electronic Repair' started by Gurkle, Jan 5, 2004.

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  1. Gurkle

    Gurkle Guest

    Hi. I have a Sansui TVM1915 that has a picture that at random.
    shrinks down to about 2 or 3 inches tall. Have replaced the vert out
    ic la78040, and have tried flexing the board too with no luck. I have
    also resoldered many connections around the vert circuit, also with
    no change. The pic looks fine and then all of a sudden shrink for a
    brief second and then back to normal. Any suggestions highly
  2. Sofie

    Sofie Guest

    Did you replace any of the half dozen or so electrolytics in the vertical
    deflection output circuitry near and around the LA7840 chip? ?
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