cool! clock FM sounds like something i might have to add.
the closed/open hat problem happened to me too, i'm pretty sure it
was one of those cut tracks, or a mistakenly reconnected one.
i don't know where you are, but radio shack here just got these
small pin vises with tiny tiny drill bits for like $12. that's what
i used.
i'd love to hear some samples! i want to record mine and post it
soon.
--- In
tr-707@yahoogroups.com
, "acousmatique" <acousmatique@y...>
wrote:
>
> --- In
tr-707@yahoogroups.com
, "gregory zifcak"
<foleymachine@y...> wrote:
> > if you look at the TR-72707 guts file i uploaded, you can see a
> > number of blue wires near the lower left hand side of the board.
>
> Yes, those are beautiful guts! I found some of these conections
myself, which
> restored the crash and ride cymbals. The hats VCA is slightly
broken... the
> open/closed selector pulse gets there, but all hats sound open. I
opted to just
> leave as is so the PCB doesn't suffer any more (lots of repairs
prior to bends).
> I did manage to make a better closed hat than the original, but it
is switched
> instead of gated. Also I connected a wire from the hats clock to
the VCA outout
> which has the effect of an envelope-controlled pitch bend.
>
> > the grey ribbon cable going under the
> > board is the clock signals. they come up to the pins through
tiny
> > holes that you can't really see in this picture.
>
> I was wanting to do something similar, but I don't yet have drill
bits fine
> enough, so I glued wire to the top of the gate IC and connected to
the (now
> isolated) pads.
>
> I put decay pots on the ride and crash voices, and did extensive
SRAM
> switching between them. Each gets a 12-position rotary switched
from its pin
> 27. Results in lots of weird FM percussion and reverb/ flange
effects.
>
> There are toggles I installed for FM of the 555 clocks (pin 3
output to pin 5
> input), and to combine frequency pots on a given clock. Friday I
will try to
> finish the mods and put it all back together. Trying to decide
about whether or
> not to put trigger outs as well! More pics and details this
weekend.
>
> CJ (very tired)