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tone control board

  1. metaphile

    Cleaning sealed pots on Sansui QRX-7001 F-2425 Tone Control board

    Hello audiokarma, First post here. I'm in the process of restoring a Sansui QRX-7001 that I inherited from my late father earlier this year. I didn't even know how to solder when I began in June - by now I've completed two DIY amplifiers and a preamp and have recapped and replaced (some of)...
  2. PTL-Pioneer

    SA8500 only works on DBT

    OK so another problem, recapping a nice sa8500 for a friend, completed aws 083 switch circuit first, dbt then music test, all good. All caps electrolytics changed. Moved on to awg034 control amp, replaced all caps and transistors ksa992fbu for the 2sa725, and bunch of ksc1845fta for the...
    • PTL-Pioneer
    • Thread
    • audiokarma buzz tone control board treble/bass pot trouble
    • Replies: 272
    • Forum: Pioneer Audio
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