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
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> > 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:
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> > From: Quazimodo<noddyspuncture@...>
> > Subject: [yamahacs80] Re: powering up
> > To: yamahacs80@yahoogroups.com
> > Date: Saturday, March 24, 2012, 1:26 PM
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> >        Hi Robert,
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> > 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.
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> > Cheers,
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> > TOM
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> > --- In yamahacs80@yahoogroups.com, "robert"<rbhall7ice@>  wrote:
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> >> hey everyone-
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> >> i have not turned my instrument on since about 1998 and was wondering if
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> >> the sudden power might hurt it (capacitors and such)
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> >> can it be brought up slow with a variac as some do with audio gear?
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> >> -i'm not a technician so excuse my ignorance please.
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> >> thanks for any guidance,
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> >> robert
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> > Yahoo! Groups Links
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> > 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
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