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circuit boards

  1. K

    6BM8 PUSH PULL BOARD INFO

    Hello, I found this “experimenters” circuit board for a 6BM8 push pull. I guess it was designed by Richard Sears? It says at the bottom. But i cannot find any info on this. I would like to do something with it maybe build it? Has anyone ever came across one of these? Or know where i can find any...
  2. G

    Trying to fix Klipsch 4.1 Promedia static noise issue

    I just found this forum on Reddit and was wondering if this community can help somehow get back my speaker system back to life. I have this old 4.1 Promedia that is having some static noise issues. Every time I connect the satellite speakers to the subwoofer I get this loud static noise from...
    • Gauzdx
    • Thread
    • circuit board help circuit boards klipsch problems repair help static noise
    • Replies: 0
    • Forum: The Klipsch Korner
  3. Testadmin

    Pioneer Spec4

    Hello, before I get to my problem I would like to say thank you to everyone for the absolutely valuable information posted here in this forum. I was able to fix a few great and old devices because of you experts. T H A N K Y O U !!!!! This is my first thread. (I'm from Germany so please...
  4. P

    Restoring and Cleaning Amplifier Internals

    I've come across a Pioneer SA-510 that was kept in the garage as an amplifier. It started "acting weird" so it was given to me. I respect the vintage tech, and want to bring this thing back to life for normal use in a cared for environment. It's got 2 problems. It is oxidized inside. Rusted on...
    • pkalder
    • Thread
    • alcohol amp amplifier board circuit boards cleaning oxidation pcb restore vintage
    • Replies: 33
    • Forum: DIY
  5. Keith Baran

    leaning PCB's

    Hello all I just picked up a Marantz 1060. It needs a re-cap but I'm working on another project now and will not have time for the next several months. I want to use the amp in my office, but it is filthy inside, piles of that thick dust. Blowing out with compressed air helped but I was...
    • Keith Baran
    • Thread
    • 1060 circuit boards cleaning circuit board marantz
    • Replies: 16
    • Forum: DIY
  6. Tangerine

    A9 - A7: circuit board comparison

    Hello all. Looking to find out if anyone has done the analysis to determine the compatibility of A-7 boards for use in an A-9. I'm thinking that the input, EQ, switching boards could be a one for one swap. Regulator boards not so much but depending on rail voltages used. Any thoughts and...
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