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pioneer sx-939

  1. D

    PIONEER SX-939 Receiver Recap w/ help from eBay Seller - an AK Connection

    Hello, AK Land, I just finished up recapping (and retransistoring, and redioding) my dad's old SX-939 he and I bought locally off Craigslist four or five years ago. Five years ago? We might as well be living in another world now, LOL. I bought three kits off eBay from a seller who refers his...
    • drp1003
    • Thread
    • pioneer pioneer sx-939 sx-939 sx-939 receiver
    • Replies: 4
    • Forum: Pioneer Audio
  2. MAV

    Pioneer SX-939 protect relay shuts off with volume increase (pict)

    Hi all, I have a SX-939 that turns on plays normally until i turn the volume up and then protection relay clip. I have set Bias 25mV and check speaker output 0V. The output signals look good (1khz, 8ohm) in the oscilloscope but when the signal starts to approach about 18V (40W) the protection...
    • MAV
    • Thread
    • oscilloscope pioneer sx-939 protection relay
    • Replies: 23
    • Forum: Pioneer Audio
  3. prose116

    Pioneer SX-939 Lights not working.

    Hi all, I picked up a SX-939 a few weeks ago for $50. from a guy that had it in his garage for 15 + years. I cleaned it up and recapped all the boards. I put new LEDs in and all lights work except for the function lights AM, FM, Phono 1, Phono 2, Mic, and Aux. I tried following the schematic ...
  4. spaghetti

    Pioneer SX-939 lights

    Hello, I recently purchased a troubled Pioneer SX-939 and I've just finished repairing it. After closing it I noticed that a lot of light comes out from the top grill, see attached picture: The light comes out abundant from the dial illumination area: I don't think this what Pioneer had...
  5. Stink Bear

    Noobie's observations on Pioneer SX-939 vs Sansui Eight Deluxe

    I am not much of an audiophile, but I've had a Pioneer SX-939 for about 200 years and I like it. I recently acquired a Sansui Eight Deluxe at our local transfer site (a place where there are dumpsters and an area to leave things that are good that are no longer wanted), it was hidden among some...
  6. 1987randye

    How to replace Pioneer SX-939 dial and meter lamps?

    I am a newbie to working on Vintage audio, but am handy with small tasks (hopefully, this is one!). I have been searching the internet for a video or step-by-step instructions regarding how to replace the dial and meter fuse lamps on a Pioneer SX-939. Any help would be appreciated.
  7. J

    Pioneer SX-939 volume control

    I'm in need of a volume control for a pioneer sx-939 if anybody has one and wants to sell it please let me know or if you know where I can find one I would really appreciate it. I think the part # is acv-134
  8. Connor G

    Pioneer SX-9930

    I aquired a mint Pioneer SX-9930 for free a while back and had it serviced. It works really well and sounds amazing! I was told by multiple people that it is a very rare receiver (being a European version of the SX-939) in the US. Do you guys have any thoughts on it? I'll try to include some...
    • Connor G
    • Thread
    • free mint opinions pioneer pioneer sx-939 pioneer sx-9930 receiver sx-939 sx-9930 vintage
    • Replies: 10
    • Forum: Solid State
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