Archive of the former Yahoo!Groups mailing list: OldSynths

I purchased the DK600 for $50 at a small shop almost a year ago, and
determining that the backup battery was fine (I actually just removed
it for safety's sake), everything seemed to work fine except the panel
buttons (all knobs work perfectly). Here's what I figured out:

Every time a button is pressed, the synth resets. Resets to what? I'm
not sure if it's a preset or not: a slow attack, a fast LFO, and a lot
of the Noise turned up. There is a "button" on the main PCB for a
manual reset. If you've seen it, it is just two points that you use a
multimeter in diode mode to connect. This resets the synth exactly as
if I had pressed a button.

What I'm thinking is that anytime a button is pressed it is somehow
traveling to the CPU chip (IC1) and a signal is sent to pin 14 which
triggers the reset (I'm sure this is an oversimplification, but this
is what I'm picturing in my head).

What do you think? If Analog/Digital hybrids aren't really discussed
here, just let me know :)

Sam