Moog Music Forum

This is by no means a conventional means of refurbishment, but it worked splendidly for someone's memorymoog I worked on. The concentric pot can be desoldered and dissassembled, and believe it or not the inner pin can be restored by soldering the center pin of an RCA jack on top. Just need to cut o...

This is by no means a conventional means of refurbishment, but it worked splendidly for someone's memorymoog I worked on. The concentric pot can be desoldered and dissassembled, and believe it or not the inner pin can be restored by soldering the center pin of an RCA jack on top. Just need to cut ou...

synthguy1 wrote:Hello zaiusz
synthguy1 here.

Hi synthguy1, I sent you a pm

good job. so being on the common board I suspect this problem must have affected multiple voices at once?

Hello RJ! I had a similar problem which only affected one voice, where pressing the modulation button would offset the oscillator pitch. I traced the problem to the countour/glide board after finding that there was no calibration to fix this. By memory the problem was due to a bad op amp (probably a...

Can you post a sound clip reference of the type of sound you are looking for?

Your "buttery" may be another man's "creamy"

What a score, the type that only happen in synth dreams lol.

Check the big square cinch jones connector, it might just be oxydized... I've had two different minis with the same problems and cleaning this jack did the trick on both.

Well, I've been busy on my MM since I got the PS sorted out, realized I had a couple other problems I forgot about from long ago when I bought it. First problem was that the voice modulation contour generator didn't affect voice 4, looked up the schematics and it was exactly as I suspected, U45 on t...

Thanks for your answer. Nobody knows the answer for my question concerning the springs who don't make contact when the keys are not played ? I don't know the answer on that one... All I know is that if one of the springs is making contact on the other bus bar it will keep the pitch stuck on a note....

Yes sorry I was skipping ahead, verifying the voltage on the power rails is always the first step, and add, do not do this if you are not comfortable working on power supplies or have no experience-- dangerous voltages are present when measuring and can be fatal. Use extreme caution or better yet ta...

I don't think he means plays one note expecting it poly, but every key plays the same pitch. You should double check if there is a spring j-wire stuck making contact on the bus-bar, this will make every note play the same pitch. Otherwise, it does sound like you have more problems if setting differe...

Well guys, pleased to report that my memorymoog is well now, the panel and screen now seems much better than it was when it worked before. Power supply sorted out, correct voltages, burning smell attributed to bad MR502's in the PS feeding the tip41s-- was overheating so much that the plastic heatsy...

Everyone working on a MemoryMoog for their first time is a noob no? I may be self taught, but been doing this for at least 5 years with many complex synths I've restored including my Jupiter 8, 6, Prophet 10, OB8 and so many others-- the MM doesnt scare me ;) I can manage this one but there's always...

BAHH. So, I just plugged it in and could play it. Everything seemed ok EXCEPT the smell got bad and then I started to hear a tell tale hum creep up that is usually the 'about to explode' warning. Had to turn it off. Honestly don't know what could be wrong. Seems like it should be fine given that eve...

Thanks Chuck. Still considering that. But I think my problems with the PS are fixed, and have new problems to worry about... In other news, I'm still at the point of trying to see how much drain there is from the supply in amps. So noob moment here, I can't seem to get a reading using the mA setting...