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sx650

  1. S

    Pioneer SX-650 Protection Relay Issue

    Hello everyone, I hope you can help me. A few days ago my beloved SX-650 suddenly stopped working during a listening session. I turned it off and on again and noticed that the clicking noise from the protection relay was missing, so I went to this forum and looked for answers. I got my...
    • sx650pio
    • Thread
    • pioneer pioneer sx-650 protection relay sx650 troubleshooting
    • Replies: 7
    • Forum: Pioneer Audio
  2. cudajim

    Pioneer SX-650 won't fire up.

    I'm trying to fix an old Pioneer 650 amp. It's on my test bench and it crapped out just yesterday. The output relay won't engage. I get audio signal all the way to the relay and if I jump it I get good sound, both channels. The relay itself picks with an external supply. I suspect the...
  3. Gotaj

    SX-650 woes (left channel distortion when connecting speakers)

    Hello everyone. I've been reading these forums for a while, ever since I picked up a dirty SX-650 for 35 euro (~40 USD) a couple of months ago. I've no experience working on amps but was hoping to get into the hobby since I love the look and sound of vintage audio gear, so I took my chances. The...
    • Gotaj
    • Thread
    • 650 channel distortion left pioneer sx sx-650 sx650
    • Replies: 6
    • Forum: Pioneer Audio
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