![]() ![]() I just wish I could find more reports from other users saying the same. I would love to believe that just replacing the interconnect board would solve my fan noise problem too. If something did go wrong, I do not believe it was anything I did. I only disturbed the sensor part that attaches to the drive itself and did not remove any cables from the interconnect board. But I did not damage anything in the process (unless too small to detect) and the mini operated just fine for many months after the upgrade. Is the board more likely to have failed?įor a little history on my mini, I did replace the hard drive from its stock configuration not long after I purchased it in 2009. ![]() Both parts seem to run in the double-digits so I would be hesitant to get both the board AND the cable. My question about this is how do you know it wasn't a sensor itself that is bad (i.e. This is the first forum post I have come across where someone said replacing the interconnect board solved it. Now that I intend to use the machine as a server, I want to see if there is a better solution. Since there were long periods where it would stop, I lived with it. ![]() Then, at some point many months later, it returned. I recall long ago that following an OS update from 10.6 to 10.8 it seemed to immediately vanish. Well I have been putting up with intermittent fan noise on my 2009 Mac mini for a while now. Other than that, fixing the sensor cable is the only thing that I can see working. That's the best solution short of fixing the sensor itself, as you get essentially the same thermal regulation, and SSDs aren't prone to overheating anyway. You have to figure out the exact name of the broken thermal sensor for the command line app and check what the thresholds are, then see how the SMC reacts when the values are changed (if they can be changed at all). I've not tried this, but in theory it should be possible. If possible, override the thermal alarm points of the drive sensor itself so the Mini regulates by essentially ignoring the broken drive sensor.Sleep/wake will be unaffected, but a restart will require re-setting the fan mode with a login script. They will remain quiet-ish but you run the risk of overheating-the Mini will have no temperature control at all! With lots of idle usage and a suitably high fixed speed this can be okay, but there's a definite risk of overheating, so if you're using it heavily at times, this isn't a good idea. Set the fans to "manual mode" and give them a fixed speed (say, 2000 rpm).Manual mode is better in that case because it persists through sleep/wake. This will work, but they'll likely ramp up again after a sleep/wake/restart, and because the Mini is panicking about the loss of a drive sensor, it'll run at max speed all the time. ![]() Set the maximum speed of the fans to something sensible and leave them in "auto" mode.With direct SMC control, you can do a couple of things here: For usage details, see the readme for the command line app over at GitHub. You need to use the smc console application within the SMCFanControl.app bundle which will let you set all the SMC control settings directly. SMCFanControl won't let you set the maximum speed via the GUI, only the minimum speed (most "fan control" programs are the same), so the panic mode the Mac Mini is in won't be affected by it. I fixed it with the SMC command line app and some login scripts. I had a similar problem a few months back when I replaced the logic board on an old iMac in that case, something wasn't quite right and the iMac was reading power levels 5x normal, leading to max fan speeds after 30s-very annoying. ![]()
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