26 Feb
2009
26 Feb
'09
8:19 p.m.
Hey, all:
I'm hoping for some info about older micros and heat failure. We have an
archaic system at work which is going stupid on us, and we're looking at
repair-or-replace options.
Let's say you have a system which is locking up due to heat problems. I
suspect we've all seen that from time to time. We're talking failures
where you can cool things down and reboot and the system comes back and
works again, not failures where things are visibly melting and/or
burning. :)
Is there a "typical" mechanism by which heat causes a system to go south?
If you get a system which is knocked out by heat, does it make it more
prone to being knocked out by heat in the future? In other words, do heat
failures make a system physically more susceptible to more such
failures - is the damage cumulative?
Any relevant info appreciated. Thanks!
-O.-
2 Mar
2 Mar
5:12 a.m.
well,
answer is...yes and no. the part you are replacing with may be sensitive to
heat, or have the same defects that the original part had. the system
itself, (think XBOX 360) may have been poorly designed for cooling and heat
transfer, so cleaning and replacing a part may do little to fix the system.
but if you can get creative with fans, or research the parts and options,
you may be able to fix the system without little problems. hope this helps!
-Joe
On Thu, Feb 26, 2009 at 2:19 PM, O. Sharp <ohh at panix.com> wrote:
Hey, all:
I'm hoping for some info about older micros and heat failure. We have an
archaic system at work which is going stupid on us, and we're looking at
repair-or-replace options.
Let's say you have a system which is locking up due to heat problems. I
suspect we've all seen that from time to time. We're talking failures where
you can cool things down and reboot and the system comes back and works
again, not failures where things are visibly melting and/or burning. :)
Is there a "typical" mechanism by which heat causes a system to go south?
If you get a system which is knocked out by heat, does it make it more
prone to being knocked out by heat in the future? In other words, do heat
failures make a system physically more susceptible to more such failures -
is the damage cumulative?
Any relevant info appreciated. Thanks!
-O.-
8:20 a.m.
When systems get older they can get more sensitive to heat due to a process
called electromigration.
http://en.wikipedia.org/wiki/Electromigration
When systems are a long time in use there is some displacement of chip
material witch is affecting the fysical characteristics of the chip, paths
are getting thinner and displaced material could cause shortcuts etc..
Another cause, could be bad connection or cold solder connections (overtime
solder crystalizes and becomes a semi-conducter).
Most times replacing the (over)stressed or heat sensitive parts by NOS-parts
do the job, and prolongs the lifecycle of vintage equipment.
-Rik
-----Oorspronkelijk bericht-----
Van: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] Namens O. Sharp
Verzonden: donderdag 26 februari 2009 21:19
Aan: cctech at classiccmp.org
Onderwerp: Heat Failures
Hey, all:
I'm hoping for some info about older micros and heat failure.
We have an archaic system at work which is going stupid on
us, and we're looking at repair-or-replace options.
Let's say you have a system which is locking up due to heat
problems. I suspect we've all seen that from time to time.
We're talking failures where you can cool things down and
reboot and the system comes back and works again, not
failures where things are visibly melting and/or burning. :)
Is there a "typical" mechanism by which heat causes a system
to go south?
If you get a system which is knocked out by heat, does it
make it more prone to being knocked out by heat in the
future? In other words, do heat failures make a system
physically more susceptible to more such failures - is the
damage cumulative?
Any relevant info appreciated. Thanks!
-O.-
5559
days inactive
5563
days old
2 comments
3 participants
participants (3)
-
hp-fix＠xs4all.nl -
jlobocki＠gmail.com -
ohh＠panix.com