Moog Music Forum

analogmonster - Replacing U12 with a new chip worked! The peak emphasis is now working again! Thanks for your feedback. One thing I have on my 'mod wishlist' is adding an external input for VC to control the LFO. I see some mentions of that on the forum but no real specific instructions. Does anyone...

One other question I had was about the keyboard current source adjustment on page 16 of the service manual. I’m able to adjust hi end trim R2057 for 2.85 bolts with high c pressed, but when I hit the low F and adjust low end trim R2051 for 0 volts, I’m not able to get 0 volts. The float I can get is...

Analogmaster- Thanks for getting back to me. I had no idea about the risks of using a multi meter on the synth. I’ve got a scope I can use from here on out. Ur appraisal of shorting U12 while using the multimeter matches my experience. I’ve got a replacement chip I’ve ordered from Jameco and should ...

I meant to add that I bought a LM3046N for U1009 as a replacement for CA3046N
As I read they have same specs. Does anyone see any issues with that ?

Thanks for getting back. I’m no sure that I’m getting no self oscillation from the filter. I’m looking at swapping out U1009 IC for a new one. And updating the peak emphasis slider with a new one from syntaur.

Hello- This is my first time posting on the forum, so please forgive me if my forum etiquette is off. I recently acquired an MG-1 and have done a few mods: - Changed resistor to detune full octave (tone source 2) - Removed resistor so Output is Louder - Added LFO mod for .25 and .5 LFO speed. I cali...