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pioneer sx-1280

  1. X

    Pioneer SX-1280 voltages at power supply and no FM

    Unit is working under AM, tape, phono, aux, but I am not getting any meter movement or signal under FM. I measured at Power supply pin 16 Orange wire and I am not getting the 13 V, checked back to the power supply and receiving 0 V. This unit has been recapped, and we also replaced the diodes /...
  2. X

    Pioneer SX-1280 DEAD AM / DEAD FM. No tuning meter movement

    Hello everyone, I am beginning to work on a pioneer SX 1280 and the unit powers on, protection relay clicks as it should and I get sound under aux, phono and tape. However, when I select a.m. or FM there is no tuning deflection at all on either- there is also no static nor sound at all. I’d...
    • xalara76
    • Thread
    • no fm or am pioneer pioneer sx-1280 sx-1280 tuner
    • Replies: 15
    • Forum: Pioneer Audio
  3. Brivan

    Pioneer SX-1280 with Hum in the Audio

    Hello, everyone I've been trying to diagnose a low-level audio hum in a Pioneer SX-1280 but, so far, have come up with nothing. I've read other threads in the Pioneer forum that have dealt with the same hum issue, but my situation appears to be a bit different from the others. The receiver...
    • Brivan
    • Thread
    • hum pioneer pioneer sx-1280 sx-1280
    • Replies: 41
    • Forum: Pioneer Audio
  4. Super Noob

    Project: Pioneer SX-1280

    Time for me to share another build. Keep in mind that this 1280 was picked up with some issues. Fired it up on the dim bulb = passed. Seemed to work somewhat... bias was off in one channel and offset was off. I dialed DC offset to a more acceptable level and tweaked bias as close as...
    • Super Noob
    • Thread
    • pioneer sx-1280 rebuild restoration sx-1280 sx1280
    • Replies: 36
    • Forum: Pioneer Audio
  5. postman56

    How to get at the pots on a Pioneer SX1280 Please?

    I had a quick look inside of my lovely Pioneer SX-1280 to see that the pots are enclosed in a housing so it doesn't appear like it's going to be a simple shot of Deoxit into them. Any help and suggestions would be appreciated, for I've got one that's acting up. Appreciated Ken
  6. cbusuttil

    Pioneer SX-1280 Restoration in Malta

    Hello all! recently acquired this marvelous SX-1280 - been looking for one for a while. I also have an SX-980 which i recapped myself back in 2011. Here are some pictures that I managed to take while restoring this big old dog. re soldered all of the solder joints, full recap and replacement of...
    • cbusuttil
    • Thread
    • 1280 pioneer pioneer 1280 pioneer sx pioneer sx 1280 pioneer sx-1280 sx
    • Replies: 44
    • Forum: Pioneer Audio
  7. Jondubb35

    IC Chips needed for SX-1280

    Hello- I'm in need of the near impossible to find IC chips for my Pioneer SX-1280. Any AKers out there have any and are willing to sell? Parts are PA1001A and PA1002 Thanks all
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