[sdiy] Repairability of modern analog synths

[Gordonjcp]

On Tue, Oct 20, 2020 at 09:00:54AM -0700, David G Dixon wrote:
> Well, I've got a broken JX-8P collecting dust behind my workbench in the
> garage.  My problem with broken digital synths isn't that I'll have to fix
> the microcontroller.  My problem is that I'm very scared to even start
> looking at it with a view to fixing it.  With analog gear, I'm generally
> pretty confident that I'll find the problem quickly, because I understand
> how it works.

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?

-- 
Gordonjcp