• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

output stage

  1. david winter

    Output stage transistor subs for BD517/518 (=MPSU05/55) and BD597

    Hi, Both output stages (schematic below) have one shorted BD597 output transistor. One channel has both drivers + BC238B shorted (all ok on the other). I'd like to use modern subs instead of those pricey BD5xx. For the BD597 output transistors I still have one or two pairs of MJE3055 (same...
    • david winter
    • Thread
    • amplifier output stage saba transistor replacement
    • Replies: 15
    • Forum: Solid State
  2. david winter

    Luxman M-2000 can't adjust bias

    Hi, I'm trying to find out why the bias on both channels can't be adjusted. The amp was recaped, I cleaned the relays which work fine (the first clicks within one second after powering up, followed by the second relay (which turns the VU lights on) 3 seconds after). The voltages going to both...
  3. david winter

    Technics SE-A5 with random fault (supposedly bias)

    Hi, I'm stuck on this amp. The input board has been recaped. I also changed two small electrolytics on the power stage board. Right channel works fine, and bias adjusts without trouble. Left channel will intermittently work well with stable bias once adjusted. However, when the problem happens...
    • david winter
    • Thread
    • amplifier bias distorsion output stage se-a5 technics
    • Replies: 7
    • Forum: Solid State
Back
Top Bottom