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ta-8650

  1. MattiaM

    Sony TA-8650 bias adjustment

    Since there is no unique source of information on the bias for the Sony TA-8650, with no mention of changes from the 125mV in the original Sony Service manual in any service bulletin, and rumors from a Japanese forum of a required new value of 30/40mV, I decided to do a quick and by no means...
    • MattiaM
    • Thread
    • bias adjustement distortion sony vfets ta-8650 vfet vfets
    • Replies: 8
    • Forum: Solid State
  2. MattiaM

    Sony TA-8650 filter cap replacement?

    I got my hands on a beautiful TA-8650 that I bought broken a couple of weeks ago and brought back to life. It's the best example I have ever come across, nobody had ever worked on it, and it was in storage for a very long time (in a very dusty place). It came with 3 of 2SK60 gone and a burnt...
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