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sx550

  1. hippo008

    Pioneer SX-550 "POP" on startup and hiss at high volume

    Hello all, I just finished a repair of my SX550 I got for $25. After replacing some caps in the power supply, new LED lights, cleaning the pots and setting the bias it sounds pretty good! I am very happy with its turnout. I am having two persistent problems though, on startup there is a loud...
    • hippo008
    • Thread
    • help pioneer power amplifier repair reciever repair sx550
    • Replies: 1
    • Forum: Solid State
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