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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
    appreciated.
     
  2. Sofie

    Sofie Guest

    Gurckle:
    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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