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Vintage Synth Repair

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Message

Re: where to buy new power transformer?

2008-09-14 by r_j_d_2.phila

thanks much, antoine. good to know mouser has them. the synth is an
arp 2600. the current owner i am purchasing from had the synth looked
over by phil cirocco, and he said the transformer is causing voltage
drift over time, so assuming the part is reasonable, im gonna start
with that and then see if the problem still exists. 


--- In vintagesynthrepair@yahoogroups.com, Antoine DeschĂȘnes
<antdes45@...> wrote:
>
> Hi,
> 
> get hold of the synth first, or attach the required schematic part if 
> possible, it will help things. When the power transformer fails, there 
> often is a problem somewhere else.
> 
> If it outputs +15v and -15v, the transformer could be a 18V-0V-18V, as 
> diodes will rise the voltage up to 1.414*AC voltage.
> 
> There are many different types of transformers, different sizes for
each 
> of them, and different ways to connect them.
> 
> Transformers: 
>
http://www.mouser.com/search/Refine.aspx?Ne=254453+1447464&N=254453+1323038&Ns=P_SField
> 
> Antoine
> 
> r_j_d_2.phila a écrit :
> > hi folks, i've never had to replace a transformer, but im about to
> > come into a synth that needs the power transformer replaced. reading
> > the schems, i know the PSU puts out +15v and -15v. not sure what the
> > x-former is putting out, as im not in possession of the synth yet.(+24
> > and -24?)
> >
> > any recommendations for internal power x-formers? google search just
> > turns up EXTERNAL x-formers. thanks for any leads.  
> >
>

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