Yahoo Groups archive

Vintage Synth Repair

Index last updated: 2026-04-28 23:41 UTC

Message

Re: [vintagesynthrepair] Arp PrDGX parts?

2013-07-06 by Terje Winther

Yes, they are really unobtainium.
Fortunately, this is just a resistor network, and the resistor values are in the service manual.
You will need a lot of trimmers to do the work.
I just tried to create this with matched resistors (of fixed value), but it was not precise enough, so I will have to re-do the job with trimmers on my ProDGX as well.

Terje



Den 6. juli. 2013 kl. 04.30 skrev Jim Blair:

Hey folks,

I have an unhappy ProDGX that's been in for repair. There appears to be a faulty chip that goes by the name "CTS resistor network B-2701-011".

The tech is having problems sourcing a replacement. Can anyone on the list help, either with the part or a source?

Apparently, if this chip is truly unobtainium, a bunch of trim pots can be added into the circuit to do the job. Of course, I'd rather have the original part.

Thanks!

Jim Blair
Ape Island Sound
Nanaimo, BC, Canada
https://www.facebook.com/ApeIslandSound



Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.