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sx-3800

  1. C

    SX-3800 Power Board Issues

    Hi Everyone, I recently bought a "non-working" SX-3800 and I've been attempting to get it into the "working" category. My first power-on of the unit was on a DBT. The bulb on the DBT dimmed right away but the only thing that came on was the three lights that illuminate the analog tuning scale...
  2. W

    SX-3800 repair

    I have checked every component on the power supply and audio output boards. Replaced numerous blown resistors, a few caps and the output transistors. If I run it without the output transistors connected, I hear the relay click and the DBT has a dim glow. When I connect the output transistors the...
    • Way San
    • Thread
    • output board output devices pioneer sx-3800
    • Replies: 15
    • Forum: Pioneer Audio
  3. Devileyes

    Pioneer SX-3800 Surprise!

    So I bought this very nice external condition SX-3800 from a seller on an auction site. In the pics, in the auction, the receiver looked like new. The seller stated that it powered up, but had no output. Since I plan on learning about this stuff, I decided to buy it...with the idea maybe someday...
  4. Super Noob

    Project: Pioneer SX-3800

    Few weeks back, I stumbled on a local Fluoroscan. It was non-working and was concerned that the outputs many have been blown (from what I read). Though not the top of the heap SX-3900, the SX-3800 boasts 60 WPC (not too shabby). Here is how she arrived. It would not pass the DBT... so here...
  5. J

    Reviving a SX-3800 but audio drops on both channels with high load

    Hello, I have a Pioneer SX-3800 that I am restoring. It was DOA and was a victim from a cracked transistor socket. I first replaced the sockets with phoenix connectors. I then replaced all the caps and transistors on the power supply board and replaced 3 resistors and 1 transistor that...
  6. jd3rdcoast

    Attempting repair of an SX-3800 for first time.

    I picked up my first SX-3800 (non working) thrown in as part of a deal on a SX-980 a few months ago. Decided to pull it out and see what it needs. Front Panel and glass in good condition and wood cover only has minor nicks on couple edge and expected dust accumulation inside. Looks like some wax...
  7. S

    Pioneer SX-3800 2.5a fuse blowing

    This receiver stopped working properly recently under normal conditions. When I replace the 2.5a fuse the unit lights up for a moment and the fuse pops. Im having no luck troubleshooting this unit can anybody offer some ideas?
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