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Motherboard Alarm Abit Uguru help

Posted on 2006-10-30
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Last Modified: 2012-08-14
hi

I opened the abit FanEQ, and I must have changed a few settings, and now when I access the internet I get an alarm go off on the motherboard. (i'm assuming it's because more applications are being used and the CPU goes crazy). (while writting this question it's gone off but I can't have it going off all the time).

The current FanEQ settings are

CPU Fan
 "disable FanEQ" selected, LOW temp 35, High temp 65

NB
 "disable FanEQ" selected, no LOW temp, High temp 50
Reference temp is CPU temp (although I've tried it with all of the options)


I'm not interested in overclocking or anything, I just want the defaults to work. I haven't had a problem like this in the past.
I'm not sure what version the motherboard is, but it may be "abit A17" or "AI7"

thanks
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Question by:bluebirds1984
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6 Comments
 
LVL 4

Author Comment

by:bluebirds1984
ID: 17833346
I just found this application showing the temps

http://img82.imageshack.us/my.php?image=alarmzj7.jpg

looks like the PWM alarm is going off.....help!
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Accepted Solution

by:
denisty earned 2000 total points
ID: 17833395
Since FanEQ is already disabled for both, then your fans are running at full speed all the time.
High Temp is when the fan runs at full speed
Low Temp is when the fan runs at lower speed (quiet mode)

your NB fan will run slow gradually increase speed until it runs at full speed 50C
your CPU fan will run at the same slow speed up to 35C, then it will gradually increase speed until it runs at full speed at 65C and higher.

The alarm going off is because your CPU and/or NB are telling you they are getting too "hot".
There are 2 reasons:
Your NB and CPU alarm settings are too low, so that means it will go off at slightly hotter than normal operating temperatures, giving you a false alarm. I think it should be set to go off at around 70C-80C

If your NB and CPU alarm settings are set high enough, then that means your CPU and NB are constantly overheating.
Make sure your CPU and/or NB Fans are not working properly - make sure they are connected securely to fan headers, maybe they got busted and are not working at all.  Also the case should be properly ventilated, etc.

Good Luck!

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LVL 4

Author Comment

by:bluebirds1984
ID: 17833439
I've figured out that it is the PWM alarm that is going off, when I use minimal applications the alarm stops and the PWM temp goes to around 61.

when I use more apps it goes up to 70 and the alarm goes off. it's only happened since i accidently changed the settings in that FanEQ software, i can't see it being a coincidence. i'm thinking it must be the Reference temp option which must have changed. all the fans are working correctly from what I've seen on the motherboard.

http://img82.imageshack.us/my.php?image=alarmzj7.jpg
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LVL 1

Expert Comment

by:denisty
ID: 17833473
The "PWM Temp" sensor is located amid the CPU power supply section.  Look for those small black squares about 1cm x 1cm with 3 feet. Those are the one's that are getting hot.  Add heatisnks if they don't have heatsinks, and put a small fan to blow on them to cool them down.  you can use saw off chipset heatsinks from old motherboards and attach with very think double sided tape althought it is not the best, it is better than nothing. make sure you sand paper the exposed aluminum because aluminum is a conductor and aluminum "saw dust" can short your motherboard
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LVL 1

Expert Comment

by:denisty
ID: 17833507
Supposedly, PWM (mosfet) temps can handle 70-80 degrees ok. But of course better to keep as cool as possible.

Here a link to a pic of what MOSFETs look like:
http://www.st.com/stonline/press/news/year2004/p1436cbig.jpg
0
 
LVL 4

Author Comment

by:bluebirds1984
ID: 17866106
thanks for your replies.

at the moment I will not be able to fit an additional alarm, but the alarm is driving me crazy.

I've looked in the BIOS but I can't find the temperature control for the PWM alarm, which is definitly the problem alarm. I can control the problem by closing down applications, but this is a problem because when I'm watching a video the alarm still goes off. I've noticed the alarm goes off when it hits 70.

do you know where i can increase the threshold?

thanks
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