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Thread: Tascam 388 no right channel

  1. #21
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    Hello all. Thought I'd try to renew this thread. I've been distracted, partly due to the machine itself, and partly focusing on playing more and other life stuff.

    If anyone had some insight it would be sincerely appreciated. I've looked around for techs in the area and it seems like someone who could reliably work on this older machine is pretty hard to come by. Thanks again!

  2. #22
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    Hello, I had an issue a few years ago with my L/R assign buttons. They produced no sound. Turned out to be the u104 chip on the monitor buss B pcb. You indicate having mono/summing issues during playback. Not sure replacing u104 would fix that, but might be worth a try. Are you monitoring through the L/R buss or the overdub monitor section? (The section with the gain and pan pots)

  3. #23
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    Thanks - that chip was mentioned earlier in the thread. I previously switched the monitor buss B pcb with one from my parts machine, and the issue did not change. I was monitoring through the L/R bus as well as the monitor section, and both had the same results.

    With a little perseverance I was able to track down a tech who might be able to work on it and not charge an inflated price. The trick is just getting the machine over to him. I'm hoping to do that in the next few weeks. I think this issue is beyond swapping parts.

  4. #24
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    You could try pulling the metal bottom off the unit and reseating the buss board that goes perpendicular across the channel boards. Just push /pull it lightly. I've done this while running tone to the inputs and you can see the result.

  5. #25
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    Do you mean the tan strip that you have to remove to access the monitor pcbs? I took that on and off and even replaced that with one form the parts machine too. Still no luck.

  6. #26
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    Yes, that's the one. Goes across the channel and monitor boards.

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