I am having the weirdest problem with my Grandmother. For some reason the arp/seq duty cycle is somehow modulating the filter's frequency. If the seq/arp's light is on the filter's cutoff is higher and vice verse. I've tried every control I can, and have performed a settings reset on the synth too, but nothing seems to work.
My workaround is to plug another clock source in the back, wait till the state changes to off, then disconnect the patch connecting on the external clock source, leaving the clock in dead-patched with the cable hanging out the back.
Has anyone run into something like this
