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From: polishedball on 19 Mar 2010 18:31
The schematics I have do not list the voltages at the input to the
main board. Does anyone have a voltage list for that input connector
on the board comming from the TX? Have a suspected bad transformer
and want to prove it for certain. Thanks

John
From: Sam on 21 Mar 2010 19:08
Hello John,

It must not be difficult to found out if the transformer is bad or
not..:-)

But I opened my 8032 to make a "voltage list" for you.

First, look at this schematic: http://zimmers.net/anonftp/pub/cbm/schematics/computers/pet/8032/8032051-3.gif

On the motherboard connector:
8 and 9: ca. 15 volts
1 and 3 ca. 10 volts
3 and 5 ca,.10 volts
1 and 3 ca. 20 volts
2 and 6 goes to the big capacitor behind the transformer.

On the transformer the two wires to the monitor: ca. 19 volts.

Good luck, SAM
From: polishedball on 22 Mar 2010 07:57
Thank you for taking the time to measure these for me.

John


On Mar 21, 7:08 pm, Sam <siemappel...(a)quicknet.nl> wrote:
> Hello John,
>
> It must not be difficult to found out if the transformer is bad or
> not..:-)
>
> But I opened my 8032 to make a "voltage list" for you.
>
> First, look at this schematic:http://zimmers.net/anonftp/pub/cbm/schematics/computers/pet/8032/8032...
>
> On the motherboard connector:
> 8 and 9: ca. 15 volts
> 1 and 3 ca. 10 volts
> 3 and 5 ca,.10 volts
> 1 and 3 ca. 20 volts
> 2 and 6 goes to the big capacitor behind the transformer.
>
> On the transformer the two wires to the monitor: ca. 19 volts.
>
> Good luck, SAM

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