🚀 go-pugleaf

Craig Dewick (craig@zeta.org.au) wrote:
: In <849480849.11471.0@juno106.demon.co.uk> dan <dan@juno106.demon.co.uk> writes:

: >We have an old Sun 3/60 which we use to serve local web pages (it might
: >be ancient but httpd works amazingly well on these machines!!).  The machine
: >works fine except that recently the machine has started to shut down and
: >reboot randomly.  The machine never produces any errors or fails its self
: >tests.  When it is running it runs perfectly.  The fault definitely seems
: >to be a hardware fault.  The console reports no errors nor does anything
: >get reported in system logs etc.  The machine has no problems with HDs or SCSI. 

: >The machine reboots approx once every two hours - any ideas?

: Could be heat-related. As a precautionary measure, you might like to 
: swich it to diag mode and attach a terminal to serial port A (9600, 7, e, 
: 1). Then you'll see all the diagnostic test info when the machine is 
: powered up, and if anything is logged to the console, it will appear on 
: the terminal where you can see it.

I had the same problem with an old Sun 3/160.  To tell you the ultimate 
truth, the way I solved the problem was to literally take the huge beast 
apart (ALL the way apart) and procede to clean off all of the metal, SCSI 
cabling, circuit boards, and casing.  I used ordinary warm water to clean 
all of the wires and fans (worked incredibly well! =) and a circuit board 
cleaning aerosol to clean the circuit boards.  I was having the same 
problem as you before I did all of this, the machine would reboot 
randomly, sometimes not even staying 'alive' for more than a minute.  
When I finally put it back together, and turned it on (after allowing two 
weeks for it to dry thoroughly, and making sure that all of the 
electrical connections were clean and tight), it remained on!  It has 
been on constantly since then, and that was two years ago.  I think most 
of the problem was large accumulations of dust and dirt over the fan 
housings, causing the air-flow between the circuit boards to be severely 
hindered...hence chips overheating!  

Chris

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