I picked up an old Jx-3p recently, ostensibly as a source of parts for my other one. However, it's mostly sound and I think it's worth getting it back to life.
The mainboard has a fault that has killed 3 voices. I thought it was a chip or something but after a lot of fiddling I've discovered that a number of traces and pads have been quite badly corroded near the back panel.
If anybody has got one out there drop me a message.