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black diodes

  1. JKBay

    Marantz 2220 complete rebuild

    I have a 2220 which I have just started to rebuild. Right off the bat it appears that the P-700 board had a catastrophic incident. (See burn out on R739) I know the 2220 is a low end unit but I want to completely resurrect it as part of my learning. I have removed a few parts and most are...
    • JKBay
    • Thread
    • 2220 2sc1030 black diodes catastrophic diodes marantz p-700
    • Replies: 8
    • Forum: Marantz Audio
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