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bias current

  1. U

    Need Bias Current Help with Sansui AU-20000 (0 mv)

    Hi everyone, I'm experiencing an issue with my Sansui AU-20000 amplifier. When I set the low pass filter on the front panel, the amp goes into protection mode, and a loud pop is heard from the speakers. The amp is quite old, so I decided to recap all the boards and change some transistors...
  2. Andrew Lane

    Need help with Sansui 5000a F-1040-1 boards

    Hello everyone. Just picked up a 5000a at an estate sale. Very clean unit but the left channel would blow the 4amp fuses. Opened the unit and discovered the f1040-1 boards. This is my first major tuner rebuild/repair but have repaired other electronics. Ordered a f-1040-1 rebuild kit from eBay...
  3. Traverso

    Marantz 1122 DC bias adjustment

    Hello, I am here with a superb integrated from Marantz 1122 dc. After pots cleaning and relay change, it sounds nicely. However it runs a bit warm, which is ok but I liked to check offset and bias. Offset was easy to check and adjust. What I do not know is the bias current value and how...
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