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AC15cc1 Effects not working.

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  • AC15cc1 Effects not working.

    Trying to diagnose a loss of Reverb AND tremolo on an AC15cc1. Not sure if they stopped working at the same time or not. Not very familiar with this circuit...

    Schematics:
    http://www.guitarnewsdaily.com/wp-co...matic_only.pdf

    The rails on IC1, IC2, and IC3 all check out OK, 3 volts off. (27v, -27v, 27v, -27v, 15v, -15v)

    Checked the footswitch with a dummy plug. Touching either reverb + produces no buzz, reverb shows up maybe 5% when the tank is tapped. So quiet I can't tell if it's mechanical or electronic noise I'm hearing. Checked with a different tank. Any direction would be appreciate! Thanks!

  • #2
    Try swapping the two ECC83 tubes (V1 and V2). Looks like half of V2 controls the signal going to the reverb tank. I would start there. Then maybe check out IC 3

    DONE FORGET TO DISCHARGE THE CAPS!!!! DON'T DIE!

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