Intermittent(?) power-supply trouble

From: Sipke de Wal <>
Date: Thu Dec 27 13:20:55 2001

If it is a switching PSU you'll propably need to load it
in order to have it function properly. I always use an old
defuncty HD for this purpose .....................

Chances are that if the load is not large enough it will shut
itself down, while it may still be a OK PSU.


Sipke de Wal

----- Original Message -----
From: Christopher Smith <>
To: Classiccmp (E-mail) <>
Sent: Thursday, December 27, 2001 7:55 PM
Subject: Intermittent(?) power-supply trouble

> Hi everybody.
> Still working on those MIPS RISComputers. I've gotten all three to power-up
> and self-test at least once.
> The one that's giving me problems came to me marked "bad power supply." Not
> being one to believe the markings, I tried it, and it powered up fine, did
> the whole self test, and (due to the lack of any disks) just set there, as
> you'd expect.
> So here's the deal. I powered it off, and then back on. The second time,
> it didn't seem to be getting any power at all -- not even fan-buzz.
> Would I be right to suspect a loose joint or the like? Is there anything
> else that might cause the power supply to work sporadically?
> What's the best way to attack this and get the power-supply fixed? Should I
> just dig out a multimeter and start checking connections?
> Regards,
> Chris
> Christopher Smith, Perl Developer
> Amdocs - Champaign, IL
> /usr/bin/perl -e '
> print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
> '
Received on Thu Dec 27 2001 - 13:20:55 GMT

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