Prodigy Diagnosis Part 2

roboctopus · Post by **roboctopus** » Thu Jul 28, 2005 2:12 pm

Well, I got my darned prodigy back from the tech after you guys so helpfully pointed me in the direction of where to get the ICs for the attack. He put in new ICs and gave it back to me, telling me "that was all he could do." It's still doing the same thing, which is that the attack is not responding. Twist the knob all you like, there is never any change in the attack time. Does anyone have any suggestions?

Drew · Post by **Drew** » Thu Jul 28, 2005 2:29 pm

i'm not being rude but if i gave a tech a synth to fix a particular problem
i would be unhappy if it was not resolved.
what tech did you take it to?
if you are in the uk try http://synthrestore.co.uk/ i'm sure he could fix it

OysterRock · Post by **OysterRock** » Thu Jul 28, 2005 3:38 pm

I don't mean to be rude either, but are you sure your tech is competent? I mean, he didn't even think the 4007's were still available. I would demand a refund.

roboctopus · Post by **roboctopus** » Thu Jul 28, 2005 3:47 pm

I'm not so sure he's competent, now that I have my prodigy back and it doesn't work any better than it did before. He was recommended to me as perhaps the only guy in town that would work on moogs. This is the first time I've ever taken the thing to get repaired. It worked fine until the attack stopped responding. I'm definately going to talk to the guy.

A curious note on the problem. The sustain knob on the VCA and the VCF turn the sound off completely unless they are set pretty high now. I wonder what that means...

alphacode · Post by **alphacode** » Fri Jul 29, 2005 9:43 am

This is normal i had this problem in the Mg 1 ,Atack Decay Release are in the same chipset if i remember .

The cheepest way is :
If you can handle soldering iron .

Get the shematics . you have all the parts listed there.
Replace all parts in the VCA enveloppe And VCF enveloppe area .
It will cost you 10 eur MAX .
That's what i did . And trust me i'm not an electronic engineer

Those synths are so simple ....
And the good thing if you brake something .just replace it .All the parts are avaiable and cheap.
Buy a book about basis in electronics and read it .
If you are playing analog synthesizers ,especially old, it's good to know a little about electronics.if Something wrong with synth you'll have an idea where it's coming from on the board.

Good luck

OysterRock · Post by **OysterRock** » Fri Jul 29, 2005 11:20 am

I agree, there's nothing more satisfying than doing it yourself. Make sure you practice soldering on something first. Don't just start soldering in your Moog! Get an old cheap toy or something and have at it.

Drew · Post by **Drew** » Fri Jul 29, 2005 2:41 pm

yes i also agree i thought even monophonics were complicated inside untill i opened up my pro one

roboctopus · Post by **roboctopus** » Sat Jul 30, 2005 12:31 pm

I have absolutely no electronic knowledge, so I'm a little (a lot) hesistant to try figuring out what's wrong myself. It's frustrating though, since apparently the guy I took it to who was recommended to me didn't know much either. He replaced ICs for the attack apparently unnecessarily since the problem remains. I complained that he didn't fix it and he has agreed to "take a deeper look at the synth" and see if he can figure out what's wrong. Well, why the heck didn't you do that to begin with before you wasted time and my money replacing ICs?

Has anybody had a problem with the prodigy similar to this? The attack is sort of stuck on about 2 second, for both the VCA and VCF. Although turning up the decay time seems to lengthen attack. So long decay=slow attack, but nothing equals fast attack, so no punchy bass lines. Grrr. Anyone know a good Moog tech in or around Austin, TX?