![](https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/?action=dlattach;attach=645449;image)
Oklay... so for the last few hours, I've been working on trying to figure out how to control the fan on my huge copper CPU cooler with the PWM out from the MB (and working on a huge slice of apple pie); it is old-school with just a pot soldered to two pins on the motor, so appears to either use a linear regulator to control the motor speed, or perhaps that pot controls the duty cycle of the H-gate... I'd have to take the thing off my MB and do some poking & prodding to be sure. And then I realized, I'll need to poke & prod a working PWM controlled fan to get the same information about the PWM signal off the MB.
So I go dig around in my bin of fans & heat-sinks... yes, that is the original cooler that came with my 1055T; pristine, never used and still in the original box. We won't talk about the raging packrattinosis embodied by that fact; glass houses, etc.
![Wink ;)](https://www.eevblog.com/forum/Smileys/default/wink.gif)
So I start scribbling some notes on what to look for on the fan (I vaguely remember reading somewhere that the standard for these is 25KHz PWM, open-collector with pullup on the fan) and moving shit around to get to my 1054-cum-1104Z, and then it dawns on me... why the EFF am I even messing with all this crap, when all I need to do is drop that AMD-approved cooler on the damn thing and be done with it?
And the only answer I can come up with... is that you guys in here would see it as a cop-out.
![Shocked :o](https://www.eevblog.com/forum/Smileys/default/shocked.gif)
And you know what's really funny? I'm totally down widdat. As far as I'm concerned, it's a perfectly valid reason to bust a nut and try to figure out how this damned thing is supposed to work, instead of taking the easy way out.
Cheers,
mnem
*NARRRFF!*