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Crate GT212 amp , 2005

Discussion in 'Electronic Repair' started by N_Cook, Jan 12, 2011.

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  1. N_Cook

    N_Cook Guest

    Second time I've come across this prea ground connected to casing and
    separate pa ground connected to casing via standoffs to metalwork. Underside
    of pcb large solder pad, upperside 2 pieces of tinned copper wire. The
    underside solder seems to compress , maybe pcb as well, and then exceed the
    give in the star washer and looses good grounding. This time prea end ,
    previous time was pa end problem.
    This time will solder brass washer on underside,each end, solder just
    between washer and board , not standoff touching surface.
     
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