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    Looking for a single 2SD555 . . .

    Just finishing up a new PL400S2 acquisition, and it was looking perfect, other than bias not getting below .4 on one chan and .42 on the other. Made power into a load fine, yada yada . . . Did a full recap (mains has a 10,000uF on B- and 5900uF on B+ as received, 10K slopped in with glue and...
  2. T

    Phase 400-II Quasi comp to comp conversion

    Just wondering if anyone has done this prior *WITHOUT* changing out boards or backplane. It looks pretty trivial - the PL service bulletin seems to indicate that the only change to the PL36 is adding R127 and R128 (56K), and it looks like the backplane change is simply flipping the emitter...
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