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stk0039

  1. RogerALB

    Questions Regarding Pioneer SX-680 Problems: It all started with buzzing

    I acquired a Pioneer SX-680 that needs TLC, and I figured it would be a good opportunity to learn some new stuff. The situation started with a loud buzz from the speakers. I think there may be more than one problem. In the process of diagnosing the buzz I discovered that R401 was dead. I...
  2. P

    Technics SU-8044 STK0039 issue 55V???

    Hello, I'm trying to repair a Technics SU-8044 amplifier. The last owner changed the LEFT STK because the left channel wasn't working. After that it still doesn't work. I dismounted both STK to test them but I don't know how to test them properly with a multimeter. I joined the schematic...
    • pirogoner
    • Thread
    • stk stk0039 su-8044
    • Replies: 15
    • Forum: DIY
  3. Dwayne Heath

    Goin crazy on sx-680...

    I just picked up an sx-680 from a friend ..very cheap..actually..embarrassing lol. Not bad shape either. But my post is regarding the tuner rewind that I am trying to get dun..its a little bit more of a p.i.t.a. then I realized..wow..I would post a photo but every time I take one it's tellin me...
  4. PTL-Pioneer

    SX-690 - No Output - Repair Thread - Help & Guidance Requested-Please

    Hi All I have purchased a non-working SX690, same as the SX680 but different dial face (I think). A really nice looking unit, well built, no idea what they sound like, but i got it to try and fix up without going for the shotgun approach. I know the STK-0039 modules are considered a weak point...
    • PTL-Pioneer
    • Thread
    • 680 darlington darlington modules pioneer stk0039 sx690
    • Replies: 34
    • Forum: Pioneer Audio
  5. streckfu

    Whelp....screwed the pooch and torched an output on SX-680.

    Backstory: As described in my bookshelf speaker thread, I picked up the Overnight Sensation speaker kit to build and put them together. I tested the crossovers with the drivers out of the enclosures after building them with a small Kinter amp I have. They seemed to work fine so I put them in the...
    • streckfu
    • Thread
    • left output no output shorted output stk0039 sx-680
    • Replies: 12
    • Forum: Pioneer Audio
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