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preamp no output

  1. J

    Nikko Beta 1 and High voltage JFET

    Hello everyone, I am working on repairing a Nikko Beta 1 preamp. This preamp is pretty unusual with +- 66V power rails. I need to replace a JFET 2SK95 (Shindengen) with VDS max 150V! All my searches suggest there isn't a modern equivalent. I did manage to locate its P-CH partner 2SJ32, but I...
  2. R

    C33 - no sound (?)

    Greetings y'all! I have two units in the shop for servicing from a client, a MC2155 and a C33. The client said that the combo suddenly had no more sound (while playing). The 2155 did have some caps that were shot (power supply board) but didn't appear to cause a major issue with it. Anyway...
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