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  1. Kurogasuki

    6100 channel switching problem

    Hi Fred_Bee, I'd just replace the REG401 with a new IC 7805 and go from there. It's a really easy task. On a different note: I'm wondering if anyone has an idea how to prevent the tubes from blowing the REG401, and ultimately the MIDI ICs (formerly 301-305)? Since I'm finally able to play...
  2. Kurogasuki

    6100 channel switching problem

    SUCCESS!! I thought I'd report back how I got the amp back to work. As mentioned above, I had to replace REG401 with a new IC 7805. Then: With MASSIVE help from Andrej (https://www.facebook.com/allwah/) I took out IC 301-305 and replaced IC302 and IC 305 with two new controllers he provided. And...
  3. Kurogasuki

    6100 channel switching problem

    Hi Crew, I did contact Anitoli, and he was able to point me into the right directions. With some more help I was able to figure out a few things, one being that the REG401 (which provides the power to the midi section I believe) was toast. I replaced it with another IC7805 and now there's 5V...
  4. Kurogasuki

    6100 channel switching problem

    Nope. Nothing. :facepalm:
  5. Kurogasuki

    6100 channel switching problem

    Hi again, I measured the C301 against the chassis (check out the image, I hope that's the right one...?). Voltmeter shows nothing, no voltage at all. I guess the power supply is toast (assuming that this is the right part I measured)? Andreas
  6. Kurogasuki

    6100 channel switching problem

    Hi, thanks for your reply. Yes I think I can do that. From what I read it's a 5V power supply that feeds the midi board, I'll give it a shot later today. I need to figure out where exactly I need to measure that voltage... And if you don't hear back from me, then Darwin won ;)
  7. Kurogasuki

    6100 channel switching problem

    Hi everyone, My 6100 worked flawlessly, then one tube blew, and I had to take it to a tech. He replaced all four 5881 end tubes with Sovteks, which were also in there before. I just got my 6100 back, and on turning it on I encountered (for the first time ever!) the described channel issue: No...

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