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m-90

  1. OlyDan

    Pioneer M-90 Right Channel Problems

    I have a Pioneer M-90 power amp which I've owned for over 20 years. I bought it out of the broken pile at a pawn shop and with the help of a knowledgeable tech I was able to bring it back to life. I have had it in to a repair service twice since then and have had extensive work done replacing...
    • OlyDan
    • Thread
    • m-90 olypia power amp repair repair technician
    • Replies: 21
    • Forum: DIY
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