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transistor substitutes

  1. tutor_turtle

    Sansui AU-9500 mods

    I have done almost every modification found on this site for my AU-9500. (film caps where applicable, new electrolytics throughout, on-semi small signal transistors) While It has come out quite nice, I did not change the outputs (2SA909/2SC1886) or the pre-driver transistors on the F-2029 driver...
  2. kasbah512

    JVC AX-R97: No bias adjustment?? Output transistor... Upgrade?

    I started trying to repair this receiver, and I'm concerned for a few reasons. Primarily that there is no DC bias adjustment, and considering I had some blown transistors, including the outputs that I replaced (for some with a 50% higher gain). For the most part, everything is functional...
    • kasbah512
    • Thread
    • dc bias jvc jvc ax-r97 safety risks transistor substitutes
    • Replies: 4
    • Forum: Solid State
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