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From: RGR-74 on 11 May 2010 08:45
Hello everyone,
I'm looking for service manual
a power supply built Wayne Kerr
the model is PDD3502A.
Can anyone help me?
Thanks to all
Joseph
From: RGR-74 on 12 May 2010 04:33
On 11 Mag, 14:45, RGR-74 <romano...(a)libero.it> wrote:
> Hello everyone,
> I'm looking for service manual
> a power supply built Wayne Kerr
> the model is PDD3502A.
> Can anyone help me?
> Thanks to all
> Joseph

Troubleshooting on 'power PDD3502A built Wayne Kerr
gave the first results, the fault is in a control card marked with the
code,
"5NPD3502C BATCH 024";
on this card I found two briken diodes with case minimelf,
seems like a diode 1N4148 but the other seems a zener;
the card did not label with an indication of the components;
if someone can send me the circuit diagram with the layout of this
board
I thank him in advance.

Joseph
From: RGR-74 on 12 May 2010 09:19
On 12 Mag, 10:33, RGR-74 <romano...(a)libero.it> wrote:
> On 11 Mag, 14:45, RGR-74 <romano...(a)libero.it> wrote:
>
> > Hello everyone,
> > I'm looking for service manual
> > a power supply built Wayne Kerr
> > the model is PDD3502A.
> > Can anyone help me?
> > Thanks to all
> > Joseph
>
> Troubleshooting on 'power PDD3502A built Wayne Kerr
> gave the first results, the fault is in a control card marked with the
> code,
> "5NPD3502C BATCH 024";
> on this card I found two briken diodes with case minimelf,
> seems like a diode 1N4148 but the other seems a zener;
> the card did not label with an indication of the components;
> if someone can send me the circuit diagram with the layout of this
> board
> I thank him in advance.
>
> Joseph

The repair goes, I measured the voltage across two diodes
corresponding
(but in the second twin channel adapter card), I read a voltage of 5.1
V,
then the zener diode may be broken.
I will keep you updated as soon as possible.
I am always waiting for some wiring.
Thank you all.
Joseph
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