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Fender AA270 Pro Reverb Capacitor value

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  • Fender AA270 Pro Reverb Capacitor value

    Hi, Ive got a pro reverb in for repair at the moment. It's has had the bias capacitors replaced at some time in the past. On the circuit diagrams I've got (from the net and the Tube Amp book) it looks like these capacitors are labeled as 50uf but in all cases this part of the circuit is almost unreadable. The amplifier currently has one 150uf and one 47uf capacitor and was working like this for years before being left in a garage for 10years. The capacitors in question are 47uf from bias pot to ground and 150uf from the negative side of the diode to ground.
    I've looked at schemaics for other models of the Pro Reverb and this part of the circuit is different on them.
    I've attached the schematic I've got.
    Could anybody tell me which is the correct value for these capacitors please?
    Attached Files

  • #2
    Here is the Dual Showman.
    Shown are two 50uf/70 V caps.
    Attached Files

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    • #3
      Thanks for that.
      That part of the circuit looks very similar on both amps and two 50uf's makes more sense than the existing caps. Thanks again

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