[sdiy] TOG-top octave generator replacement for MG-1

[Tim Ressel]

Is the MG-1 TOG run of of a crystal?

--timbo


On 6/7/2017 11:36 AM, KA4HJH wrote:
> I'm still preparing to refurbish a Radio Shack Concertmate MG-1. The TOG chip is blown. Is there a modern replacement for the original chip, like a PIC or something? I had to jury rig the keyboard contacts to 5V to get the envelope to trigger and I'd like to put it back into original condition while I'm working on it.
>
> I know this has been discussed before but a search of my email archives turned up almost nothing.
>
> Terry Bowman, KA4HJH
> "The Mac Doctor"
>
>
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-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com