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
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> --- 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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> 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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