[sdiy] bit one

[Rude 66]

ok, here's an update on the bit:

cleaned all connectors. didn't make a difference. re-soldered the output
board. didn't make a difference. after playing around a bit more, i can
describe the problem a little better: something is modulating everything.
the oscillators sound almost like they're frewuency modulated: on some notes
you have a pure tone, on others you have what my mono-poly in fm-mode sounds
like.
and the 'sound staying on after the eg has closed' is more apparent when you
open the filter. when full open there's only a slight drop in volume if the
key is released with the release at zero. the more you close the filter, the
more it dies out. also if you first select a patch, you don't hear the
sound. it's only after it has been triggered that it won't stop anymore.
there are some things left to try: i haven't taken the chips out of their
sockets and clean them.. (and there are 6 CEM filter chips..) and i haven't
re-soldered the 'analogue board' yet. though maybe it could be a digital
problem.. what i find strange is that the sounds i send it via sysex or tape
save are corrupted right away.

ruud