Well, 30 degrees celcius in the room where the machines are.

I've tried setting up a extra fan on the opposite side of the PSU fan to
increase the airflow, but it didn't seem to help a bit since I got this
shortly after turning the machine :

? PC:     0xbfc02620<vtr=UTLBM>
? CR:     0xc<CE=0,EXC=TLBS>
? SR:     0x30080000<CU1,CU0,CM,IPL=8>
? VA:     0x3e245be6
? ER:     180003f0
? MER:    0x162000<>

This came while I was on a boot prompt.

The strange thing is that I can sometimes make the machine run for several
hours without problems, while it at other times crash a few minute after
boot.
Since cooling doesn't seem to help it has to be something else.... maybe
unstable electricity. It's usually fairly constant around 50 Hz, but the
voltage is not very precise compared to Denmark.

I've also noticed that the system clock seems to be speeding. After having
the machine turned off for about 20 days it had gained about 1 year.
Is a bad clock battery the cause of this ???


/Jesper



03/07/2001 21:28
"Steve Sheldon" <ssheldon@sodablue.org>


Por favor, responda a <ssheldon@sodablue.org>

Destinatarios: <nemholt_jf@tsm.es>
CC:
Asunto:   RE: Most likely thing to overheat/cause thermal errors in a
          5000/25


When you say it's hot out...  Just how hot is it?

You might want to try taking the cover off the case and directing a
small room fan over the components.  That should provide a lot of air
flow and will help to identify if it is a heating problem.

> -----Original Message-----
> From: port-pmax-owner@netbsd.org
> [mailto:port-pmax-owner@netbsd.org] On Behalf Of nemholt_jf@tsm.es
> Sent: Tuesday, July 03, 2001 9:42 AM
> To: port-pmax@netbsd.org
> Subject: Most likely thing to overheat/cause thermal errors
> in a 5000/25
>
>
> Hi!
>
> I've had some problems with stability on my 5k/25. Sudden
> crashes with no obvious reason. Sometimes I can break into
> the debugger or cause it to reboot, and sometimes (usually)
> it's just completely locked up.
>
> I've tested the RAM and it's not that (unless all my memory
> is faulty). I've tested the disk, and it's not that. I've
> tested with and without graphics card... no difference. I've
> tested with 1.4.1 and 1.5. No difference. I've tested with 2
> different AUI 2 BNC adapters. No difference.
>
> Most likely, some hardware error has sneaked into my machine,
> but what I've noticed is that when I lived in cold Denmark I
> never had any crashes, while here in shot & sunny Spain it
> can barely stay alive for one day.
>
> Maybe it's a bad connection somewhere that only goes really
> bad and disconnect when it's hot. Maybe it's something
> overheating... I don't know.
>
> What is the most likely chip(s) in need of some active
> cooling ??? (currently there are only the fan in the PSU and
> those round cylinder cooling profiles on the CPU board).
>
>
> /Jesper
>
>