G50VT fan cable

Hey, I just got a small question about the G50VT fan cable; while unplugging it I accidently pulled out two of the wires (the red wire and the blue wire, such a cliché... ).
Anywho, I figured since the other two wires are crossed these should also be crossed, but not being sure I figured I might as well ask here first.

I tried to see which wire should go where on the disassembly guide, but the res of the picture was too low for me to tell which wire went where.

 

Hello, welcome to NBR! I will be serving a fuzzy picture today and assure you the pinout from fan to RAM is:

Yellow (Tach)
Black (0V GND)
Blue (PWM)
Red (+5V)

http://i.imgur.com/QVe3F.jpg

I know this isn't the best picture but between this and one or two others on my computer I assure you this is the pinout that was on my machine. If you didn't pull out the red cable it's harder to damage the fan. If your fan spins at full speed your yellow cable is not connected. Someone else can help me with what the blue cable is...

Hope this helps!

 

Thank you! That's exactly what I needed.

Will get back if there are any problems.

 

Sounds good, good luck with the wires and keep us posted!

 

Yup, works flawlessly, thanks once again.

It's quite amazing just how well blowing out the dust from the fan works, even if it is far from clogged.

My idle temp went down from 71C to 56C and max from 111C to 101C.
Still too high but manageable for a few days until I get my new thermal paste.

 

71C idle might not be too far off of normal for the GPU since newer drivers tend to make it clock up to full clocks more often, and the fan doesnt kick into high until 75C. 56C is a little warm but also not terrible. It sounds like your fans stay on low for a bit.

 

Yeah, but the idle temp isn't really my concern, it's mostly the max temp. 101C is a bit scary even if I guess it's not a very acute problem.
But 111C actually had my computer slow down immensly periodically for a minute or so every few minutes, making stuff like gaming and even some multitasking more or less impossible.

So I figured, why not just buy some new thermal paste when it's like 10€ and maybe prolong this old sucker's life a little.

 

Yeah I see what you mean. 10€ to save your 1000€ machine is definitely worth it, and cleaning like you just did is also a good idea. My 9800m would hit 103 sometimes, and after cleaning I would struggle to push it past 92.

One thing that helped ease my worries with my 260m was setting the critical shutdown/slowdown temp to 105C instead of 111C when I flashed the bios. It starts downclocking a little at 101C and has never reached 103C. Still hot, but it takes that edge off.

 

Will definitely check that out; anything that doesn't significantly lower the performance but increases stability and lifetime is great in my book.

 

Cutting the yellow wire in my G50VT made NO change to the behavior of the fan, except the fan never fully shuts off but is always at least at the low speed mode. The RPM speed is incremented as usual when I am looking at temperatures.

So maybe the blue 1 is the pwm wire, or they both are?

update: Cutting both the yellow and blue wires causes the fan to be @100% all the time.

Don't know if the yellow wire needs to be cut as well but I know the blue wire does. I haven't tried repairing the yellow wire to see.

 

I just realized (stupidly, can't believe I didn't think of this before) that one of the cables is a tach, either blue or yellow. It's so the computer can measure the fanspeed.