From the theory it should make no difference because each group with the four blade terminals is connected to the same signal (-12V,
GND or +12V) because the four terminals of each group are shortened. I have no idea why wiring them identically solved the problem.
Anyway - it's good tp know that now everything is fine.

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com [mailto: Doepfer_a100@yahoogroups.com ]
> Gesendet: Samstag, 4. Juli 2015 09:14
> An: Doepfer_a100@yahoogroups.com
> Betreff: 1 Re: trouble with VC patching to second G6 frame
>
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> in short the grounds were wired differently on each frame. The solution was to wire them identically.
>
> Here is what they looked like before (problem state). I made them both look like the right side photo.
>
> https://groups.yahoo.com/neo/groups/Doepfer_a100/photos/albums/1830938856/lightbox/448632445 orderBy=ordinal&sortOrder=asc
> &photoFilter=ALL#zax/448632445
>