View Single Post
  #8   Report Post  
Posted to sci.electronics.repair
Meat Plow[_5_] Meat Plow[_5_] is offline
external usenet poster
 
Posts: 667
Default Motherboard fan question

On Sat, 12 Jun 2010 18:08:50 -0500, Jim Yanik ǝʇoɹʍ:

"ian field" wrote in
news:bTTQn.27090$g76.4060@hurricane:


"Meat Plow" wrote in message
news
On Sat, 12 Jun 2010 22:13:51 +0000, Meat Plow ??o??:

On Sat, 12 Jun 2010 21:43:36 +0000, root ??o??:

New motherboards often have a small fan covering one of the bridge
chips. Likewise, expensive graphics cards have a fan on their
processor. These fans are cheaply made.

Is there protection for the MB/card to keep their chips from frying
if the tiny little fan fails?

No.

I'll revise that and say that if said fan is monitored then there can
be an audible alert set up if the fan drops below a certain RPM. The
fan would need to have three wires to be monitored. Also in BIOS there
should be a setting to alert if the mainboard goes over a set
temperature limit. The default limits are usually good enough to use.



Some motherboards have thermistors mounted under various chips and
software included on the setup disk with temp monitor and alarm.

I think my other PC has it, but its not obvious - I'd have to re-run
the setup disk to find out where it is.

Either that or I didn't bother with it last time I did a clean install.




often,before anything fries,you start seeing wierd
things,glitches,freezes,etc.

maybe you could/should build a temp monitoring system,separate from the
PC circuitry,with red LED's that flash when a zone goes overtemp,and
voices "warning,warning" in a robotic voice ala Lost in Space.(use a
speech chip from a greeting card...)
it could even kick in an emergency backup fan,and perhaps even a freeze
spray blast to chill things down.

[end "humor" mode]


Ummm not to spoil your humor however, there is/was a PCI card and front
panel that did just that. Designed for those who used to overclock their
systems and run them on the ragged edge.