Vintage Synth Repair

thanks mariano. actually, the ua723/ua748's are still available and
cheap, check mouser. the mje1100/1090's are harder to find/expensive,
but still out there. 

needless to say, i ordered all of the above today, and will drop in
when they all arrive. i'll check back in a week or so when i have more
news. as far as any problems downstream pulling down the - rail, im
just gonna get the PSU running properly and see where it takes me. i
guess the obvious thing is just to disconnect the +/-/com leads to
synth and then test; i'll probably do that when all the parts come in.

thanks for the help, guys. hoping to have a fully functional 2600 in a
week or so!



--- In vintagesynthrepair@yahoogroups.com, "syntherman"
<syntherman@...> wrote:
>
> 
> OOOPSS.... sorry, didn't pay enough attention to the schematic and
> made an ass out of myself.... the UA748 opamp used there is a 14 pin
> version....  even harder to get... seems this is gonna be a bit harder
> to replace.
> 
> Mariano
> 
> --- In vintagesynthrepair@yahoogroups.com, "syntherman" 
> <syntherman@> wrote
>  
> >  last, if the uA/LM748 is nowhere to be found, try using a lm741
> > instead, there are some out there, (at least here in my parts bin)
> > other single 8 pin opamp's should work provided you desolder C5 just
> > in case.
> > 
> >
>