[sdiy] Need help reading a schematic

[Jean Bender]

Hi !
Yep, i'm sure it's a 220v. Unit
I gonna check again values after the transformer.
Maybe the diodes arrow is also good looking forward.
Thanks for your support
!!
J.

Le jeudi 13 août 2020, Ullrich Peter <Peter.Ullrich at kapsch.net> a écrit :

> Hi!
>
> Are you sure that it is a 220V and not a 110V unit?
>
> This could cause the fuse blow if it’s a 110V unit...
>
> Ciao
> Peter
>
> -----Ursprüngliche Nachricht-----
> Von: Synth-diy <synth-diy-bounces at synth-diy.org> Im Auftrag von Ben Stuyts
> Gesendet: Donnerstag, 13. August 2020 14:46
> An: Jean Bender <lofideadbeat at gmail.com>
> Cc: SDIY <synth-diy at synth-diy.org>
> Betreff: Re: [sdiy] Need help reading a schematic
>
>
>
> > On 13 Aug 2020, at 09:43, Jean Bender <lofideadbeat at gmail.com> wrote:
> >
> > As 2 fuses always blow up if powered, i'm pretty sure the power
> > transformer is dead, it's not a thoroidal one. I gonna try to get a
> > 220V to 2 secondary 18V AC and see if it lett the pdd14 can go back to
> > life ;).
> > The regulators are LM7815, 7915 and 7805.
> > The only thing i don't get yet is that two wires go from one
> > secondary, the V+ one goes through a fuse and then directly to the
> > pedal board jack. I guess i don't need it actually, as i don't have
> > the pedalboard !
>
> Something doesn’t add up. Are both those two fuses both on the secondary
> side? If so, what makes you assume the transformer is bad? Have you
> actually measured the output voltage of the transformer?
>
> If anything, that would point to a problem further on.
>
> Ben
>
>
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-- 
Jean Bender <http://jeanbender.blogspot.fr/>

Hak Lofi Record <http://h.a.k.free.fr/>
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