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Manuel Bouyer wrote:
> 
> On Thu, Sep 27, 2001 at 02:20:38AM +1000, Simon Burge wrote:
> > "Tiago de Aviz" wrote:
> >
> > > Did anyone ever have problems with the Power Supply of the DECstation
> > > 5000/33? Mine simply doesn't turn on anymore...
> > >

Yes, I did.
We had a strong flash hitting the local power station.
After that only one of the three running 5000/xx came back. I thought, the the
power supplys of the others were gone. I kept them for spare parts. After a
couple of weeks I had to reorganize my stuff. Because I couldn't remember which
of the 5000/xx went away I swtiched them all on again - and they were back again
- all !!
With any knowledge what protects the power supply from beeing destroyed by
flashback. But I learned, that one should not switch off an on the 5000/xx to
fast. Wait a minute after switch off. If not, the power supply goes into some
kind of protection mode, which lasts I think somewhat 10 minutes.

> > > It was on for two days, then when i turned it off, never came back. What
> > > could be wrong? Fuses? Parts? Nothing like storms happened around
> > > here... So...? I dunno.
> >
> > I had a friend drop around just yesterday with the same problem.  From
> > memory, the fan(s) started to spin but stopped almost straight away, and
> > the power LED doesn't come on at all.  He picked up a CRO that I had
> > here; if he manages to fix it I'll ask what he did...
> 
> Did you have some load on the power supply when you tried this ?
> 
> I had a sparc IPC power supply showing the same behavior, which started
> working again when I connected a HD to it.
> Obviously the IPC mainboard doesn't suck enouth power for this power supply.
> 
> --
> Manuel Bouyer <bouyer@antioche.eu.org>
> --
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