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Moog Source Incremental Controller

Posted: Sun Aug 28, 2016 1:53 pm
by davebr
I got a Moog Source in for repair and had to rebuild the Incremental Controller. I could find a few hints on the web but none that were successful. I replaced both sensors and made necessary modifications to get a very nice gray code output and the Incremental Controller works very well. Details of the Incremental Controller rebuild along with a few other modifications and repairs are on my http://modularsynthesis.com/moog/source/source.htm page.

Dave

Re: Moog Source Incremental Controller

Posted: Mon Aug 29, 2016 11:38 am
by MC
Nice work. There's something to be said about restoring a discrete incremental controller vs encoder assemblies that are long out of production.

No doubt you saw my webpages as I had different solution for the volume control, and it has served me well since 1990. Those batteries are also due for replacement.

Re: Moog Source Incremental Controller

Posted: Fri Sep 02, 2016 9:17 pm
by Tonysal123
Very nice job & write up. I'll definitely keep this in mind if my Source starts misbehaving.

Re: Moog Source Incremental Controller

Posted: Fri Sep 23, 2016 3:03 am
by jessicapatel123
I don't own a Source but repaired one. The main issue was the Incremental Controller would only count up. Secondary issues were segments out in the Incremental Controller display, ground loop noise, and intermittent jacks.The Source has fair access for repair. You have to remove the keyboard to access the PCBs but you cannot lift the top cover very far up. The keyboard can sit next to the Source and still plug in. This photo shows the digital PCB on the left and the analog PCB on the right. I was very careful with the three flex cables that connect the membrane keyboard and also the film work which is exposed on the encoder. Both are quite fragile.

Re: Moog Source Incremental Controller

Posted: Fri Sep 23, 2016 9:48 am
by MC
The filmwork on the encoder and membrane cables are not fragile on my unit, but I have owned it since 1985 and always had it in a climate controlled place. Since they are polymer components they could very well go fragile if stored in an uncontrolled environment.