Asus M50Sa fan control

Hi guys!
How its possible to control Asus M50Sa fan speed, running win7.

I tried a lot of software, like rivaturner, speedfan etc. but none of them worked properly...


Tepmerature of video card is ~70°, fan ir running at 30% speed, even if im playing some game and temp is going over 90-95° anyway fan runs at 30%

some spec of notebook:
Asus M50Sa Series Notebook
Mobile DualCore Intel Core 2 Duo T9300, 2500 MHz (12.5 x 200)
ATI Mobility Radeon HD 3650 (1024 MB)


got some ideas?
tnx

 

someone?!?

 

I wish I could find a control. My Asus laptop is stuck in "low and quiet" mode. CPU and GPU heat up until power shuts off.

There is only one fan in system (by radiator on side) A big copper heat conductor transfers heat from major heat sources to the radiator. This confuses most fan control programs. Only CPU temperature is monitored. There may be some benefit to forcing CPU to maximum since that is where temperature is monitored. If your laptop is working normally, this should force the fan on to cool everything. Keeping CPU speeds slow with fast GPU is a bad combination since heat is generated away from the temperature monitor.

I really wish there were a way to force maximum fan for gaming and not monitor temperature at all

 

I don't know if you have the capability to do this but you could connect your fan directly to a 5V which will let it run at full power constantly. You may get it from one of the USB lines.


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I have the same laptop as you and as far as I know, there's no way to manually control the fan speed. The fan is not actually running @ 30%, just that its stuck at that reading. At the moment I'm using Everest to read the fan rpm. I also noticed that your GPU idle/gaming is quite high (my idle GPU temp is around 55° and gaming around 78°-81°). Here are some things that you might want to try:-

1. Clear then vent/fan of any accumulated dust

2. Use a notebook cooler

3. Reapply the thermal paste

 

I have a G50vt and installed a 260m which makes the fan run at full speed all the time. After partially successfully trying to make a 0-100% PWM controller for about 16 hours with some other EE's, I just settled on a cheap pot, switch, and bypass resistor in series with the fan. I wired it and glued it to the outside of my laptop and now I have manual fan control always.
You have to watch your temps though or remember to turn it up while gaming.

 

could you make a guide on how to do this and pics of how it looks?

 

@ Win 7 users, under the Control Panel ->Hardware and Sound -> Power Options -> Edit Plan Settings , then click on "Change advanced power settings". A new windows will pop up. Goto "Processor power management" ->"System cooling policy".

I don't think this effects the fan speed on my G50VT one bit whether it is on the passive or active cooling setting. But, might work for you if it is set for passive right now.

 

@timinator: might take me a bit, i'm a little occupied with other things... but basically it's just a fan + resistor in series. I chose to make the resistor a potentiometer with a maximum resistance of 47Ohms by adding a bypass resistor.

@ickibar: it doesn't affect the fan speed at all. It slows down your CPU before turning on the fan.

 

ok thanks anyways

 

So, I just did the PWM mod described here "Hard" manual fan speed mod. **image heavy**

Temps are great, but I have an issue. When the CPU core temperature goes above 51*C, the fan goes back to auto?

 

To clarify, this is just a bypass switch, correct? It just lets you switch the fan to full at will?

If the fan is going back to auto it's receiving too strong of a PWM signal. Increase your capacitor value perhaps. You are probably better off just having a switch tap into the DC rail for the circuit, which is what I did.

 

Sorry, this is nothing to me, I am no electrician lol.

Can you clarify what you mean by Switch tap into the DC rail for the circuit.

Thanks in advance

PS English is not my first language.

Btw, I ignored the switch part, and connected just the capacitor in series. Meaning the blue wire goes from fan, then goes through the capacitor, and the other end of the capacitor leads to the connection on the motherboard

I also have a second .047 capacitor. I could add it to the circuit to add uf, but should I set it up in parallel?

Well, none of the methods worked...

Maybe I should purchase a .1uF capacitor?

Need a reply soon please, I am going to radioshack tomorrow.

 

I don't know what the PWM signal is like but if you want to get rid of it or make it a weaker signal then you need a larger capacitor. .1uF sounds about right. If that doesn't work you could try 1uF or 10uF for good measure.

I don't know which wires are which off the top of my head, but see which one is giving you a constant 5V (probably red), which one is giving you 0V (probably black) and disconnect the others and you have a 100% speed fan 100% of the time.

 

So disconnect the black wire?

Could you also upload a picture of the wiring setup? I have a hard time imagining on what I am supposed to do.

I am really sorry for being too forceful, but your posts make me relive hope in reducing the temps.

 

The goal is to connect the fan to just +5V and GND. I can't give you a wiring diagram other than a simple connections list:

Mobo +5V to +Fan
-Fan to Mobo GND

That's it. You'll have a fan that runs at full speed with this connection. It's up to you to figure out what kind of switch you want to put in. No resistors or capacitors required.

 

Isn't the fan 12 volts?

I am going to try this out when I will come back from studies.

I have to give you a rep for this. Thank you so much. I added you to the buddy list so I could contact you at ease.

Thank you so much for your time. You are ace. I disconnected the yellow wire. So red and black wires are the only wires propelling the fan.

 

It's actually just a 5V 0.4A fan (maybe 0.5A) and the PWM signal just controls when it is on. Glad to hear you got it connected! It runs at full speed all the time now, correct?

You might be able to put a switch in the middle of where you cut the yellow wire to re-enable the default PWM. So it'd be something like:

+Yellow (mobo) to +Switch
-Switch to -Yellow (fan)

But that's just getting fancy. PM me anytime if you need help!

 

Thank you! Yeap, full speed now. I do not care about noise, as I am deaf anyways lol.