I'm planning on doing some basic maintenance on my old Polysix. I've been reading threads and manuals found here on this group, excellent tips, thanks!
I thought I'd like to make a 'basics' checklist, not about solving specific problems but just best practice for the owner who wants to take care of the synth, and keep it sounding fresh and strong.
1) Electrolytic capacitors: My synth is sounding quite dusty and a bit dull at this point, so I'll put in new electrolytic capacitors, a reasonable thing to do after 30 years. I'm going with mainly Vishay 517Ds available at Mouser.
2) I'm putting in all new 4000-series ICs, as recommended here (Old Crow):
http://www.oldcrows.net/~oldcrow/synth/tips.txtI'm getting TI's series with the CD4xxxBE or CD4xxxBEE4 part numbers.
Is there anything else that you would do without hesitation? I mean, I know that there may be some tuning work involved also, but I'm thinking about whether there's more hardware that should be replaced?
Would you take the time to swap all the old resistors, or at least those made of carbon?
Would you bother to swap the mylar and ceramic caps, or are you thinking that they will keep on trucking for years to come?
Hope to hear your inputs before I start operating, and I'm hoping not to fix what really, really doesn't need fixing ;)
Thanks,
Analoglove