I swapped the channels back to their original location (now 1 means 1 again) and played an 8-track recording I had made several weeks prior. I discovered that after the switch the same four channels (formerly 3,4,7,&8 and currently 1,2,5,&6) were now completely messed up - the erase head wouldn't function on them & no new sound could be recorded. This means that audio read by the head for channel one was now being displayed and controlled by the slider for channel 3 and vice versa. To do so, I swapped out the channels as such: 13, 24, 57, 68. I opened it back up again and decided that I'd test the Record/Play PCB (the top PCB located in the bottom shell beneath where the channel controls would go). After about 3 dozen attempts to record on these tracks, I opened up the machine and disconnected & reconnected all wire clips but to no avail. While tracks 1, 2, 5, and 6 all can have audio recorded on them and faithfully played back at the same volume, tracks 3, 4, 7, and 8 do not have this ability - they all turn out to be scratchy and very quiet (unless the input signal is clipping the entire time - then you can kind of hear it).
I did some research yesterday and thought maybe it was an input problem, so I tried all the other inputs.
However, a couple of days ago I started working on my second album (the whole reason I bought the 488 - thought I'd forgo digital this time around), and while working on drums, I found that while input signal was both audible in headphones and visibly being ported to Track 3 on the visual monitor, upon playback the recorded sound was incredibly quiet, muddy and scratchy. It arrived & worked perfectly (by which I mean I was able to record on all 8 tracks, the motor speed was consistent, everything seemed to be in order). I purchased a newly serviced Tascam 488 MKII off eBay at the beginning of September (with the 8-channel RCA output mod). I'm in a weird predicament (and it's kind of long-winded but it's that way for clarity's sake - please bear with me).
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