[Info-vax] MACHINECHK on my XP900...

[robert spalding]

Subject: Re: [Info-vax] MACHINECHK on my XP900...


> Marc Schlensog wrote 2011-02-13 19:38:
>> On Sun, 13 Feb 2011 17:07:05 +0100
>> Jan-Erik Soderholm<jan-erik.soderholm at telia.com>  wrote:
>>
>>
>>> Current ambient temperature is 56 degrees C
>>> System shutdown temperature is set to 60 degrees C
>>
>> This puppy is getting way too hot. My DS10 usually tops out @45degC.
>>
>
> The box isn't unusualy "hot", only the *measured* temperature.
>
>
>> As Hans suggested, check your fans.
>>


My DS10 of 12 years' age used to run rather warm, and eventually started 
coughing up intermittent machine checks.

I had observed that the reported CPU temperatures seemed warmer than I 
thought was reasonable, but I only started worrying about the temperature 
when I installed another DS10 for a friend, and noticed that his ran cooler, 
for no apparent reason.

When the machine checks started, I noticed that SOME of the console event 
messages implicated the power supply, so I replaced the PSU with one from 
Island Computers.  No more machine checks.

While I was at it, I replaced one of the front-panel fans (the one in front 
of of the CPU).  When I dismantled the unit to replace the fan, I discovered 
that both fans had originally been installed BACKWARDS.

Anyrate, it's currently at 49C, or around 120F.  That's in a room that 
averages 80F ambient.  No problems since the noted repairs.

FWIW,

Bob Spalding