Polysix, Juno-106, TR-707

[djblue]

So I have a sick Polysix, a semi-sick Juno-106, and a semi-sick 707
that needs to be modded.

1. Polysix.... (no, the battery is fine, I already did that) it will
only save patches in A-B-C-D 5,6 and 7,8 (total of 8 patches I
think)  maybe it's 5, 6, 7, 8 (for 16 patches) but that's about all
that's wrong...   I have schematics, but have no idea what I'm
looking at.

2. Juno-106  The Bender section is fucked.  the only thing that
works properly is the Portamento On/Off Switch.  The sliders are
kinda gritty but work okay, the volume is stuck (tried everything,
got it working with some pliers, but wouldn't go without them, and
then I broke off part of the spline. (whoops)  the portamento pot is
even worse (don't ask), and the Pitchbend is broken as well (right
where it bends), but I think some thin lexan and some epoxy will fix
that up...

3.  TR-707  Simply put, no midi.  If I put it into the midi receive
it locks up, and it stays there until I shut it off, but yet it
doesn't acknowledge midi or send it (I tested the rest with my other
drum machine, all is good) the problem is in the 707.  any
suggestions?  I haven't even started to mess with it yet.  As for
mods, I plan on putting normal-on momentary switches inline with all
of the faders (or outputs, whichever) so that I can instantly cut
off sounds, and not have to fade them in and out.  that's easy.  but
when it was open I saw some little pots in there and several
sections were labeled as to what they were for, so I hooked it up,
and started twisting, and licking the finger and pressing, but I
couldn't find anything good.  I searched the net for info, but found
none...

any help on any of these things would be great.
-ben