> i've got an early A100 Basic 1 with the bad jacks, i just wiggle
> them a bit when they flake out...is there any type of simple fix,
> short of replacing every jack

Normally the procedure described on our website will solve the problem:

www.doepfer.com > FAQ > Solving contact problems with A-100 miniature jack
sockets

Best wishes
Dieter Doepfer