Problem with GL504GM Fan speeds and ROG gaming center

[EmielK]

I was wondering if anyone could help me with this problem:
I have a ROG strix GL504GM notebook, bought last year in august, and everything was fine until the last month or so, my fan speeds are far too loud. Even when I'm not gaming or doing anything at all my fan is often spinning really fast, and because of that is very noisy. I installed apps like speedfan to monitor my fan speeds but to no avail, it just tells me my temperatures of the cpu and gpu are fine (actually really cold, around 18 degrees). For the gpu it alternates between 0 and 38 degrees. If I open the ROG gaming center app to check my system status I get -32768 degrees for the temperature of my GPU:

which is really weird! It seems there is something wrong with the detection of the temperatures of my cpu and gpu. Anyone knows how to handle this? Do I have to open the notebook up and reconnect the fans or something like that? If yes, is there a detailed step-by-step plan for this?

Cheers,
Emiel

[FULLMETALJACKET]

warmbooter wrote:
Well, it seems that unplugging/plunging the cables doesn't work for me anymore. It helped for some time, but now when I do that, the problem comes back after just 2 days 😞

I'm so frustrated with this notebook and with ASUS support. Now it seems that I will have to buy another notebook and throw this one to the garbage, since probably nobody would be willing to buy such a noisy machine. What a waste of money 😞

Bad connection on the fan's signal wire.

[warmbooter]

FULLMETALJACKET7 wrote:
Bad connection on the fan's signal wire.

You say this based on what? Were you able to fix it? What is the signal wire color?

[FULLMETALJACKET]

warmbooter wrote:
You say this based on what? Were you able to fix it? What is the signal wire color?

Based on years of experience fixing laptops. Should be an easy fix but most people want to fix it without even opening the back cover. Not gonna happen. Disconnecting the fans will do the trick for a few days, until they start acting up again. That's a dead giveaway. If memory serves me right, on the GL504, the yellow wire is the sense wire (rpm output signal) and the blue wire is PWM (rpm control signal). Could be the other way around. Different laptops can use different colors on the wires. My old lenovo uses a brown wire for the PWM signal.
You can try to narrow it down by reading the fans rpm when they start going crazy. HWmonitor should do the trick. If it reports a real value instead of a negative or insane number when it happens, the problem is likely on the PWM signal.

Have fun.

[warmbooter]

FULLMETALJACKET7 wrote:
Based on years of experience fixing laptops. Should be an easy fix but most people want to fix it without even opening the back cover. Not gonna happen. Disconnecting the fans will do the trick for a few days, until they start acting up again. That's a dead giveaway. If memory serves me right, on the GL504, the yellow wire is the sense wire (rpm output signal) and the blue wire is PWM (rpm control signal). Could be the other way around. Different laptops can use different colors on the wires. My old lenovo uses a brown wire for the PWM signal.
You can try to narrow it down by reading the fans rpm when they start going crazy. HWmonitor should do the trick. If it reports a real value instead of a negative or insane number when it happens, the problem is likely on the PWM signal.

Have fun.

Hi, thanks for the reply.

ASUS Gamming center reports correct RPM, so I guess the PWM is the culprit.
I just wonder... should I try to replace the whole wire? Or try to find where it is broken and fix only that piece of the wire (not sure if it would be possible).

[FULLMETALJACKET]

warmbooter wrote:
Hi, thanks for the reply.

ASUS Gamming center reports correct RPM, so I guess the PWM is the culprit.
I just wonder... should I try to replace the whole wire? Or try to find where it is broken and fix only that piece of the wire (not sure if it would be possible).

I would just replace the whole thing, unless I had a good connector laying around.

[æ__æœ_]

FULLMETALJACKET7 wrote:
Based on years of experience fixing laptops. Should be an easy fix but most people want to fix it without even opening the back cover. Not gonna happen. Disconnecting the fans will do the trick for a few days, until they start acting up again. That's a dead giveaway. If memory serves me right, on the GL504, the yellow wire is the sense wire (rpm output signal) and the blue wire is PWM (rpm control signal). Could be the other way around. Different laptops can use different colors on the wires. My old lenovo uses a brown wire for the PWM signal.
You can try to narrow it down by reading the fans rpm when they start going crazy. HWmonitor should do the trick. If it reports a real value instead of a negative or insane number when it happens, the problem is likely on the PWM signal.

Have fun.

In this answer, he said that he has solved the problem and that the problem lies in the hardware.

https://rog.asus.com/forum/showthread.php?104242-Strix-SCAR-II-GL504GS-Fan-Question-Stuck-on-High-fo...
Does his solution make sense?

**** Of all the answers I have seen, you first mentioned that this is a hardware issue. According to the method you said before, the problem should be on pwm. Then, how can we solve this problem? You know ， ASUS after-sales service has changed the motherboard for me, but the problem has appeared again after a while.

[FULLMETALJACKET]

棽木 wrote:
In this answer, he said that he has solved the problem and that the problem lies in the hardware.

https://rog.asus.com/forum/showthread.php?104242-Strix-SCAR-II-GL504GS-Fan-Question-Stuck-on-High-fo...
Does his solution make sense?

**** Of all the answers I have seen, you first mentioned that this is a hardware issue. According to the method you said before, the problem should be on pwm. Then, how can we solve this problem? You know ， ASUS after-sales service has changed the motherboard for me, but the problem has appeared again after a while.

Yes, it makes sense. Like I said, bad fan, wires or connector. Replacing the motherboard has same as unplugging and plugging them back in, in this case. It is indeed a hardware issue. The fan is part of the hardware.