Archive of the former Yahoo!Groups mailing list: Yamaha CS80

Watch these videos from Gavin Curtis. Very instructive about rebuilding the PSU.

http://www.youtube.com/watch?v=zGO7hFbnmIo&feature=youtube_gdata_player

http://www.youtube.com/watch?v=Up-KQHc4LNQ&feature=youtube_gdata_player


Doug

--- In yamahacs80@yahoogroups.com, David Rogoff <david@...> wrote:
>
> Don't forget: if you power up the PS disconnected from the synth, you
> need to jumper the 2 sense inputs (+8.5v and -6.5v I think) to their
> respective outputs or things will be bad! And, since the PS is linear
> (not switching) you could bring it up on a variac after you replace the
> caps and stuff.
>
> David
>
> > robert hall <mailto:rbhall7ice@...>
> > March 24, 2012 5:40 PM
> > hey thanks-that does sound like good advice.i'm wondering if i should get inside or have someone else do it.ive built a couple of simple tube amps but i'd still like someone withexperience to do it.-there was i guy at musiktek in north hollywood who was very goodbut he's in canada now.anybody out there? -i'm in l.a. obviously-thanks again for the support,robert
> >
> > --- On Sat, 3/24/12, Quazimodo<noddyspuncture@...> wrote:
> >
> > From: Quazimodo<noddyspuncture@...>
> > Subject: [yamahacs80] Re: powering up
> > To: yamahacs80@yahoogroups.com
> > Date: Saturday, March 24, 2012, 1:26 PM
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Hi Robert,
> >
> > Personally I would rebuild the PSU - with new caps and IC's. And then I would set the voltages with the PSU seperate from the rest of the synth. Then I would power her up and see what happens.
> >
> > Cheers,
> >
> > TOM
> >
> >
> >
> > --- In yamahacs80@yahoogroups.com, "robert"<rbhall7ice@> wrote:
> >
> >
> >> hey everyone-
> >
> >> i have not turned my instrument on since about 1998 and was wondering if
> >
> >> the sudden power might hurt it (capacitors and such)
> >
> >> can it be brought up slow with a variac as some do with audio gear?
> >
> >> -i'm not a technician so excuse my ignorance please.
> >
> >> thanks for any guidance,
> >
> >> robert
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> > Quazimodo <mailto:noddyspuncture@...>
> > March 24, 2012 1:26 PM
> > Hi Robert,
> > Personally I would rebuild the PSU - with new caps and IC's. And then
> > I would set the voltages with the PSU seperate from the rest of the
> > synth. Then I would power her up and see what happens.
> > Cheers,
> > TOM
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>