[sdiy] Tantalums in Yamaha CS20M/CS40M

[Gil W.]

I would replace a tant. with a tant. on the main voice circuits but not in the power supply, if they are really exchangable (are they?)

I won't bear a short circuit in a power supply caused by a failing tant, although I still have them crossing the main voltage rails in my refurbished Prophet 5.... Guess I'll just have to keep recap my synths every 15 years or so ;)



--- On Thu, 6/11/09, Pete Swarbrick <peter.swarbrick at panavision.co.uk> wrote:

> From: Pete Swarbrick <peter.swarbrick at panavision.co.uk>
> Subject: Re: [sdiy] Tantalums in Yamaha CS20M/CS40M
> To: dixon at interchange.ubc.ca, gil_we at yahoo.com, synth-diy at dropmix.xs4all.nl
> Date: Thursday, June 11, 2009, 12:53 AM
> 
> 
> 
> 
>  
>  
> Re: [sdiy] Tantalums in Yamaha CS20M/CS40M
>  
> 
> 
> 
> Yes, they do ! Spectacularly and
> destructively on occaision
> 
> 
> 
> ----- Original Message -----
> 
> From: synth-diy-bounces at dropmix.xs4all.nl
> <synth-diy-bounces at dropmix.xs4all.nl>
> 
> To: 'Gil W.' <gil_we at yahoo.com>;
> synth-diy at dropmix.xs4all.nl
> <synth-diy at dropmix.xs4all.nl>
> 
> Sent: Wed Jun 10 22:06:49 2009
> 
> Subject: RE: [sdiy] Tantalums in Yamaha CS20M/CS40M
> 
> 
> 
> Why would they blow up if they were installed in the right
> direction?  Do
> 
> old tantalums (tantala?) simply blow up on a whim?
> 
> 
> 
> > -----Original Message-----
> 
> > From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
> 
> > bounces at dropmix.xs4all.nl] On Behalf Of Gil W.
> 
> > Sent: Wednesday, June 10, 2009 11:52 AM
> 
> > To: synth-diy at dropmix.xs4all.nl
> 
> > Subject: [sdiy] Tantalums in Yamaha CS20M/CS40M
> 
> >
> 
> >
> 
> > I open up my monstrous CS20M (and my friend's
> CS40M), and I see a lot of
> 
> > tantalums in there. Before one blows up and shorts the
> thing, do you think
> 
> > it will be safe or wise to replace them all with a
> similar valued
> 
> > electrolyte ? Will the sound get worse a bit ?
> 
> >
> 
> > Particularly the power supply... There are four
> 1uf/35v tants in there,
> 
> > can I just drop 1uf electrolytes instead of them ?
> 
> >
> 
> > Thanks ;)
> 
> >
> 
> >
> 
> >
> 
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