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proton at-470

  1. Dr.Turner

    Proton AT-470 needs ICU

    Hi everybody, before proceeding with my next repair as voted here, I would like to revive the Proton AT-470 tuner, companion to the Proton AM-452 amp I recently recapped and restored. Problem: the tuner is not turning on at all. I started with DBT (fine) and visual inspection: two jumpers...
    • Dr.Turner
    • Thread
    • proton at-470 transformer
    • Replies: 6
    • Forum: Tuners
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