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stk 0050

  1. M

    Technics SA-202, Replace STK0029 with STK0050 (discrete circuit)?

    Hi guys, happy to be here, but I need some guidance from more experienced people. I've just bought a Technics SA-202 integrated amplifier, this particular model has an emotional value to me because it was the "radio" that my father had back in the day. The integrated amplifier is in general in...
    • Moncho
    • Thread
    • stk 0029 stk 0050 technics sa 202
    • Replies: 20
    • Forum: Solid State
  2. ajcoates

    SX-780 - help!

    Hey all! I just finished a full recap of my SX-780, including an upgrade to the discrete output packs that @rcs16 came up with. I also replaced the three heatsinked power supply transistors to modern lower-heat equivalents. It sounded great and tested perfectly last night, but this morning, the...
    • ajcoates
    • Thread
    • buzz through both speakers help pioneer pioneer buzzing sound pioneer sx 780 pioneer sx780 stk 0050 sx 780
    • Replies: 4
    • Forum: Pioneer Audio
  3. bzenic

    SX-780 Left Channel Bad

    After I brought a SX-780 home the relay would not engage at all. I've refreshed solder on Q25 and the relay started to engage and was getting FM working on the right channel and crazy loud whistling sound on the left. The whistling would start immediately after turning it on independent of the...
  4. W

    SX-780 Right Channel Dead

    Hi Gang - So I have a Pioneer SX-780. When I first got it a number of years ago it would power on, but no click. Did some research at the time and replaced the STK-0050 Packs (with what I'm sure were not the real thing, but impossible to find the real thing) and it's worked fine since then...
  5. grantly

    And...yet another sx-780 restoration thread

    Hi all, I went to an estate sale yesterday on a whim, and I was one of the first few people in the house. There was an incredible Barzilay cabinet with KLH 6s in custom cabinets. Way too much $$$ for me, so I decided to go to the basement. Right at the front was a cosmetically pristine sx-780...
    • grantly
    • Thread
    • pioneer pioneer sx-780 stk 0050 stk amplifier module
    • Replies: 13
    • Forum: Pioneer Audio
  6. R

    Replace STKs with rcs16's Design - Technics SA-300

    Hi All, I'm pretty sure I need to replace both STK-0039s in a beautiful SA-300 I recently acquired. All I get is buzzing on headphones or speakers, but the audio from the tape out sounds great. I started to suspect the STKs and sure enough the voltages on several of the pins appear to...
    • rjd3000
    • Thread
    • stk 0050 stk-0050 upgrade technics
    • Replies: 31
    • Forum: Solid State
  7. Rebel

    Is there any suitable replacement for STK0050's

    I have read many threads concerning this but I have yet to find a straight answer. I have had mine replaced professionally and they last 6 months. I am a novice and can do the work but I need a recommendation of a GOOD part. Can someone tell me what is a solid suitable replacement for these?
  8. T

    SX 780 Repair help.

    So I have had a good clean sx780 for months now and I love it. I moved recently and set it up and it worked fine. I noticed awhile ago that the stk 0050 was going for the right channel but it was still working at the time. After a few days, it made a pop and shut off. I took it apart and noticed...
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