[sdiy] Repairability of modern analog synths

[David G Dixon]

Gordon asked:

"Well since the JX8P is pretty much 100% analogue apart from the bit that
reads the buttons, I don't really see what the issue is.

There's literally no difference in troubleshooting analogue or digital gear.
You look at what voltages are coming out and if they're wrong you go back a
stage and see where they start to go wrong.

Out of interest, what are its symptoms, apart from the aftertouch not
working and the dirty key contacts sometimes making notes hang?"


Honestly, it's been so long since I had it out of the case that I really
don't remember, but I seem to recall that it didn't do much of anything.
Some panel lights came on, I think, and it might have made some sort of
ungodly noise.  I came to the conclusion that it was pretty fried, but I
didn't have the time or energy to deal with it at the time (I think I was at
peak pancreas-self-destruction around then) and I have simply never gotten
back to it.

It could be something as trivial as a dead battery.