[sdiy] Anyone have schematics for a Kimball Organ rhythm machine?

[aankrom]

Thanks to some helpful info from one of you, I've learned that my unit 
is very similar to a Roland TR-77. The size of the units are even 
similar, but the circuits are, as expected, not  identical. The TR-77 
has more features - some that I'd like to add. There's an octal socket 
on the back of mine that looks like it could be discrete outputs for 
each sound or maybe triggers. I'm curious as to what could have been 
connected there.

I wish my rhythm unit had each sound circuit marked on the PCB like on 
the TR-77. I can surmise which is which based on the size of the 
inductor bobbins, but that's about it. Some probing is in order...

It will be cool when I have it all boxed with the 25W amp and the 
reverb unit.

Anyone who's hacked a TR-77 or a unit like it, I'd welcome input or 
pointers to sources on the web. I like the tip on pushing buttons for 
two patterns at once. I don't know yet if that will work on mine, but 
I'm curious to see what comes out. The diodes on the pattern generator 
are these weird black plastic blobs...

AA