It sounds like you are already well on your way to "what really, really
doesn't need fixing". Spend some money on test equipment like an old
oscilloscope and a capacitance meter first.
Don Backshall
_____
From:
PolySix@yahoogroups.com [mailto:
PolySix@yahoogroups.com] On Behalf Of
analoglove
Sent: Tuesday, June 05, 2012 4:40 PM
To:
PolySix@yahoogroups.comSubject: [PolySix] Polysix service checklist for the amateur ;)
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
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