Search found 47 matches

by zaiusz
Thu Oct 27, 2016 1:13 am
Forum: Moog Music General Topics Forum
Topic: Memorymoog modulation offset issue
Replies: 6
Views: 1552

Re: Memorymoog modulation offset issue

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...
by zaiusz
Tue Jun 14, 2016 8:55 pm
Forum: Moog Music General Topics Forum
Topic: Sub 37 vs Model D
Replies: 70
Views: 33195

Re: Sub 37 vs Model D

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

Your "buttery" may be another man's "creamy" :wink:
by zaiusz
Wed May 25, 2016 1:01 pm
Forum: Moog Music General Topics Forum
Topic: Found a Minimoog D on the street
Replies: 20
Views: 7485

Re: Found a Minimoog D on the street

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.
by zaiusz
Wed Feb 10, 2016 11:34 pm
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

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...
by zaiusz
Tue Feb 09, 2016 7:36 pm
Forum: Moog Music General Topics Forum
Topic: Minimoog Model D, I need some help!
Replies: 18
Views: 3755

Re: Minimoog Model D, I need some help!

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....
by zaiusz
Tue Feb 09, 2016 11:23 am
Forum: Moog Music General Topics Forum
Topic: Minimoog Model D, I need some help!
Replies: 18
Views: 3755

Re: Minimoog Model D, I need some help!

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...
by zaiusz
Mon Feb 08, 2016 12:36 pm
Forum: Moog Music General Topics Forum
Topic: Minimoog Model D, I need some help!
Replies: 18
Views: 3755

Re: Minimoog Model D, I need some help!

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...
by zaiusz
Sun Feb 07, 2016 1:40 pm
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

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...
by zaiusz
Fri Feb 05, 2016 10:48 am
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

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...
by zaiusz
Fri Feb 05, 2016 12:15 am
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

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...
by zaiusz
Thu Feb 04, 2016 11:23 pm
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

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...
by zaiusz
Mon Feb 01, 2016 12:08 am
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

Ok, I suppose that will be my next step- check the current draw. Very good to know about the connecting sensing lines together, I didn't see a single mention of doing this in my service manual. All it said was to disconnect p131 if you have a complete loss of a line and measure between specific pins...
by zaiusz
Fri Jan 29, 2016 11:37 pm
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

Well, I'm making progress but something is definitely wrong. I see "MOOG", all the panel lights seem to work though somewhat glitchy, can scroll through patches, 6 tuned, no sound but BURNING SMELL coming from the left panel. Boy, I was hoping that getting the correct voltages outta the power supply...
by zaiusz
Fri Jan 29, 2016 10:58 pm
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

O.K. First, you need to have the +15 volt power section active, because, the 5 volt regulator gets it’s power from the +15 volt supply. Second you need to connect the sensing lines for all voltages. So for best test results, connect all 3 AC power connectors. Using the pin numbering I suggested ear...
by zaiusz
Fri Jan 29, 2016 11:56 am
Forum: Moog Music General Topics Forum
Topic: Memorymoog Power Supply woes (solved)
Replies: 41
Views: 6252

Re: Memorymoog Power Supply woes

There was a post on a forum somewhere on the net, a guy named Chuck Wagner can arrange it. A quick google search will bring him up, and it runs about 295 euros. I've been in touch with the guy about it and I'm highly considering this option at this point, I remember the fan noise in the MM is like a...