Yamaha CS80

Hello David

what do you think of using sockets with alread installed decup. cap?
I'm not sure because I remind old crow mentioned that the drilled holes on 
the pcb are not so accurate and you have to break/cut sockets from time to 
time that they will fit in the holes.



>From: David Rogoff <david@...>
>Reply-To: yamahacs80@yahoogroups.com
>To: yamahacs80@yahoogroups.com
>Subject: Re: [yamahacs80] I'm tuned!
>Date: Fri, 02 Dec 2005 21:07:25 -0800
>
>Thorsten P\ufffdrschke wrote:
> > Hello David
> >
> > Thank you very much for your quick answer.
> > I wanted to know which pcb (KAS, TKC, TSB1, eg.) you choosed to start 
>with?
> > Did you also overhaul the power supply and if which parts besides the 
>cap.
> > did you changed.
> >
> >
>I don't remember what order I did the boards in.  I did, however, do one
>board at a time and made sure it was still working before I did the next
>board. I did have a couple of solder bridges that took some time to
>find, and generated really weird symptoms.  You need to have a decent
>multi-meter and simple oscilloscope, the schematics (mostly available
>online - see Links), and an understanding of some digital and analog
>electronics, because something will go wrong when removing/replacing
>over a hundred 14 and 16 pin chips!
>
>There's tons of detailed pictures I put on the site (Photos > CS80
>renovation) as I did the work.  The only thing on the power supply was
>replacing all the caps (other than calibrating it).  All 4000-series
>CMOS chips were removed, sockets soldered in, bypass caps added, and new
>chips put in.  I also added larger caps for each board.  I basically
>followed Crow's website.  The biggest help was buying a used
>de-soldering station.  It would have been crazy to try it with just a
>spring-loaded solder remover.  When I was done, I sold it (to the owner
>of the Yahoo oldsynths group).
>
>  David