34A Power Trouble. I calmed down, here's the facts...

From: Tony Duell <ard_at_odin.phy.bris.ac.uk>
Date: Tue Nov 11 12:12:47 1997

On Tue, 11 Nov 1997, Daniel A. Seagraves wrote:

> > On Tue, 11 Nov 1997, Tony Duell wrote:
> >
>
> > > What happens if you remove all the loads from the secondary of the
> > > transformer (pull out the 8-pin plug from the distibution pcb that carries
> > > 8 black wires, and unplug the edge connector from the 15V PCB in the PSU)?
> > > Will the breaker hold then with J5 in place?
>
> Yes. It comes up, and the fans spin up. With just the edge connector
> off, it pops. With just the edge connector on, it goes.

OK, so the transformer is probably OK.

What happens with :

8pin plug out, edge connector off? (breaker holds?)

8pin plug in, edge connector off?

8pin plug out, edge connector on?

If the breaker will hold with the edge connector off and everything else
in place, first check that the edge connector is the right way round, then
start debugging the (trivial) power controller card.

>
>
>

-tony
Received on Tue Nov 11 1997 - 12:12:47 GMT