[sdiy] Moog MG1 repair help

[Aaron Lanterman]

On May 5, 2008, at 3:14 PM, Travis Thatcher wrote:
>
> I was working on the MG last evening, redoing the filter input and  
> lfo output mods I had completed a while ago, when I accidentally  
> sent some voltage into the 6th, output pin of U8, a UA741CP.  The  
> thing started smoking so I immediately shut it down.  I replaced the  
> op amp with an LM741 from radio shack (didn't have any better ones  
> laying around).
[snip]
> Is the LM741CN not a direct replacement or is there a much larger  
> problem?  Admittedly I'm a bit naive and still in the process of  
> learning  as much as I can
> about analog circuitry, so if any of this seems uninformed, I  
> apologize.

I strongly suspect you toasted something else when you toasted the  
741...

Paul S., one of the co-designers of the MG-1 (now known for his MOTM  
line), is on the list.

- Aaron