Screwdriver
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- 10,550
No not that sort of fan, the cooling fan on my Mac Mini. I bought it to start producing YouTube vids, then broke the fan control circuit upgrading the ram and hard drives. since then it blows at full speed and full volume. Sounds like a helicopter taking off. Been driving me nuts so...
I had a spare fan to determine the pin outs after I ripped the connector apart.
Didn't want to modify the machine in any way so used the microscopically small molex connector to give power to the circuit board and fan speed to the Mac. The circuit is a thermistor based DC-DC controller, as the temperature goes up, so do the volts.
Didn't say it was going to be pretty. I had to poke the bare wires through a tiny aperture in the fan outlet and shove the temperature probe up under the heatsink. No room for that thing inside.
But I tidied it up with an old film canister.
...and incredibly, it works.
Temps look good and the fan starts up slow, circa 3.5k and hovers around a relatively quiet 4.5krpm. The thing used to sit at a constant 6.5krpm which you can hear from next door. I might even tweak it a bit to drop the revs even further but I shouldn't push my luck with this.
maybe I'll get around to making some videos...
I had a spare fan to determine the pin outs after I ripped the connector apart.
Didn't want to modify the machine in any way so used the microscopically small molex connector to give power to the circuit board and fan speed to the Mac. The circuit is a thermistor based DC-DC controller, as the temperature goes up, so do the volts.
Didn't say it was going to be pretty. I had to poke the bare wires through a tiny aperture in the fan outlet and shove the temperature probe up under the heatsink. No room for that thing inside.
But I tidied it up with an old film canister.
...and incredibly, it works.
Temps look good and the fan starts up slow, circa 3.5k and hovers around a relatively quiet 4.5krpm. The thing used to sit at a constant 6.5krpm which you can hear from next door. I might even tweak it a bit to drop the revs even further but I shouldn't push my luck with this.
maybe I'll get around to making some videos...