FL90 Fan Mod - trying to make fan run at 100% always

Hello!

I know that most people already have forgotten about the fl90, but please bear with me

Originally my fl90 came with a t7500 cpu and a old bios (at the time it was current), which did not support 4G ram, at the time this was not an issue since i had only 2G anyway.

Sooo ... I've recently changed my ram sticks to 4G, and was forced to update to 1.18, which is fine and dandy, but the 1.18 bios doesnt go well with my cpu fan and it constantly turns the fan off and on (and even when its on its not running at full speed) resulting in overheating of the laptop and BSOD crashes. A friend of mine bought his a little bit later with a penryn cpu and has no issues with the 1.18 bios, so i am guessing its an issue only for the older cpus of the laptop series.

I clean my laptop regularly, last cleaning was a week ago, when i bought a new fan, because i thought my fan has died, but as it turns out its not fan problem.

So what i decided to do is force the fan to run at 100% always, via a hardware mod (since software fan management obviously is not possible), the sad part is i am not that good on hardware, and this is where you guys come in
Basically i thought of 2 options:
1. Remove the control wire from the 3 pin fan cable. The first question is which one from the 3 is the control wire? And obviously the second one is will the fan run at 100% then or it will not run at all?
2. Wire the fan directly to the usb. I have no idea how to do it, but i am sure it is possible

Can anyone provide some insight on either of the options?

 

First off, measure the temps you are getting, both CPU and GPU. Use CoreTemp and GPU-Z for that.

Good luck

 

Obviously the temps are ridiculous, otherwise the laptop would not crash/shutdown

GPU goes above 80C in idle. CPU over 50C in idle.
Before the 1.18 update the GPU was at 55-65C idle, CPU at 35-45C idle.

With the cooler pad i use the GPU under load had 70-75C max, the CPU had 45C max

 

A laptop crashing does not always mean, that the CPU/GPU is overheating, there can be thousands of reason.

I just wanted to be sure that it really is temperature related.

GPU @80 in idle is BAD - but it won't shutdown because of that - does it get higher under load? I'd assume so, but please check (e.g. with FurMark).

CPU @50 in idle is not perfect, but I would not be worried too much. How does it behave under load (check with Prime95).

What GPU do you have? Still the 8600M GT, or did you switch already?

Good luck!

 

Ooooops, you have the temps there already, under load, but with the pad.

Well, with the cooling pad, you get really good temps with load, so there really is a airflow/fan problem.

Strange question, but is the laptop sitting flat on the desk, also with the cooler pad?

The heat transport in the FL90 works best, if the laptops back face upward a bit - try it, it's true for mine. If the front is facing a bit up, it gets terrible hot FAST.

Good luck

 

Here's what I am referring to -> http://forum.notebookreview.com/har...617219-cpu-overheats-when-tilting-laptop.html

I never found out what the problem was, but some FL90s had this very extremely (like the one mentioned in the thread), mine at home not that bad, but noticeable.

Good luck!

 

Ok, guys, this is not really related to the question i asked

But to answer everyone, i had this laptop for 5-ish years. I have cleaned it regularly for 5-ish years. I have never experienced these issues until i updated my bios to 1.18. There is a noticable difference in fan operation with this bios, it handles it terrible if i may add.

The laptop is not tilted, its always sitting on table or chair or other flat surface. The pad itself elevates the back of the laptop at about 5 cm, which indeed does improve the airflow.
I still use the GT8600M.

Also what i noticed is that the BSODs occur only when i close the laptop, when I am going out or to sleep for example. Otherwise it does run hotter than normal with this bios, but at least it does not BSOD.
NOTE: the settings for the lid closing are to just turn off the display, not to go to sleep or hibernate.

The BSOD is a DRIVER POWER STATE FAILURE.
Also for anyone interested here is a minidump of the crash: https://docs.google.com/file/d/0B0Id5gJ2yIcxN2RMSmxfRkVJcVk/edit?usp=sharing

 

I hate to say that, but it could be an early sign of a video card dying. I could be wrong, of course.

You could try another, earlier BIOS,or try to find a BIOS mod, or just use the cooler pad. I'd go for the last option.

Also undervolting the GPU (and maybe CPU) would improve temps, but as I see it now, temps are not the problem, anyway.

Also, a reinstall could get rid of a driver problem, if this is a software problem.

I am running Ubuntu, so can't read your minidump, sorry.

Good luck