[rescue] seaking of SGI's - IP25 woes

[Francois Dion]

Geoff Koehler wrote:

>HI All, 
>
>Speaking of SGI challenge's, I have a problem with my XL that Im wondering if anyone has seen before.  After about half and hour from being powered on, one of the CPU's dies.  I've taken out the board and looked at it, but it doesnt "look" any different.  The heatsink on the CPU in question does not seem loose or unseated.  It stikes me as a heat-related failure, but Ive moved it to a different slot and it doesnt make any difference.  After a few hours having the thing turned off, it comes back, only to fail again half and hour later.  Any ideas?  
>
>Cheers, Geoff
>
>Geoff Koehler
>Saskatoon, SK, Canada
>Home of the SART Observatory
>207.195.94.13/sart
>_______________________________________________
>rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
>  
>

Do you have a multimeter with temperature sensor? I'd stick it on the 
heatsink to see what temperature is reached when it stops operating. 
Compare with another. Could be either that some solder joint gets flaky 
when it heats up, or the cpu itself overheats.

Francois