Vintage Synth Repair

> nothing but color code. If the cap is standing up it is a yellow dipped 
> cap. Purple is the top color (maybe violet)and blue is below it. They 
> are not color bands like a resistor but only them two colors that cover 
> the entire componet with big thick color bands. Any help appreciated.

For those colors, this online calculator suggests its a 76\ufffdF 100V 20% 
capacitor:

http://www.csgnetwork.com/capcccalc.html

Seems a bit of a weird size for a capacitor in a sequencer circuit, so 
I'm wondering might your problematic capacitor be nanofarads instead? If 
it was 76\ufffdF, it'd most likely be a electrolythic cap too.

Have you tried pulling the part from the board and measuring the 
capacitance? This way, you might get some pointers towards hitting the 
right decimal at least.. Any similar caps elsewhere on the other boards 
that you have schematics for? Or have you identified what sub-circuit 
the cap connects to (or is a part of)? F.ex. if it belongs to some 
microcontroller clock osc circuit, it could also be picofarads.

Other than that, maybe flip a coin for a 680nF or a 68nF ceramic and 
hope for the best ;)

.Arto.
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