Search results

  1. A

    6100LM Channel switching issue

    At first try voltage on IC305, pin 19, if it changes while switching between green and orange channels. If it changes ( 0 and 5 Volts), computer is O.K. Than try voltage on drain of TR202, if it changes also, problem is in IC201, vhich switches between this two channels. I'm sorry for my...
  2. A

    Quest for Marshall 6100 (30th Anniversary head) Service Manual

    https://elektrotanya.com/showresult?what=marshall+6100&kategoria=All&kat2=All
  3. A

    6101lm

    Yes, it is okay, voltages across tubes also. Something in signal chain is wrong, maybe switching opams M5201. But they are hard to find...
  4. A

    6101lm

    Transistor TR101 is open, when channel 1 and 2 are selected, to mute channnel 3. When ch 3 is selected, it must be closed (hi imedance). Try voltage on gate of TR 101, if it changes, while channels are changed.
  5. A

    6100 channel switching problem

    Maybe computer is not working properly. I made new one for my friend with a problem with this amp. And I added two little benefits: 1. Midi channel switching, because formerly it worked only on channel 1 2. For short solos holding the footswitch knob for more than 1 second will turn back to...

Latest posts



Top