![]() 12 SSD Fan Control Alternatives. SSD Fan Control is based on the system of SMC system that basically collects the data by reading the internal hardware components of the Mac and then provides all details to the users regarding temperature and speed. Lubbo’s MacBook Pro Fan Control make it easy and simple for the Mac OS X users to. The 'missing' componet is the thermal sensor, which is attached to the stock hard drive. When you take the stock hard drive out you will see that there are two connectors - the main hard drive connector and another, thinner connector. The wires for that thinner connector are stuck to the side of the hard drive with the plastic 'cover'. A cursory glance will make you think those wires are just part of the hard drive, some superfluous connector that it appears you don't need, since the SSD works fine with just the main connector attached. They are not superfluous. And those wires don't actually go into the hard drive either. If you have a look at step 21 of the Crucial SSD installation guide () you will see that the thermal sensor is just softly glued to the hard drive, probably because that's the thing that would tend to get the hottest when the system is working hard. All you need to do is pull the plastic 'cover' off and then gently peel off the sensor from the hard drive. Then you can plug the sensor back in to the appropriate socket on the main board and run the sensor to somewhere where it might get hot. I just ran mine up near the RAM and now my fan works correctly. I have resolved my fan issue. A surface mount component had somehow come off the logic board and as a result the (pwm) fan control signal was not controlling the fan. The fan defaults to full speed when it sees no pwm signal. I was able to see the (monitor) signal was working by using smcfancontrol and the slowed the fan with my finger - the rpm changed. As a result the mac was requesting, for example, 2000rpm, but as the fan didn't see the request it was giving approx. 6500rpm, hence the error code. The missing component was a bridging SMD device. By hooking up an oscilloscope I could see a pwm signal on one side of the missing bridge, but no signal at the fan. As soon as the 2 pads were bridged normal service resumed. Not sure how this component has become detached, presumably when I removed the fan connector. Anyway, it is worth checking for 2 solder pads just above the fan connector - if you see no component then you may have the same issue! Thank you AAC197 for the tip about the little smd component just next to the fan connector, somehow it got unsoldered and there was no contact, there are 3 components, and the one close to the fan connector was the issue. ![]() I checked with my multimeter and there was no connection, it seems to be a little diode or something because checking continuity after fix there was no resistance, one of the fan pins goes through it. Thank you again, also I had this SSD fan control application that did not work until I got this fixed. == Update == My board had 3 connector for the sensor's, 1 was for the hd temperature, DVD temperature, and 1 for ambient temperature. If you don't see 1 it is probably broken take a good picture of where the fan connector is at surrounding area, and I could point you where is it supposed to be. Hi, When I had this problem, I gave it to a friend of mine with a full electronics workshop in his garage. Using an oscilloscope, he was able to see the fan control signal on one of the solder pads of the missing component. He was then also able to see that the other solder pad was connected to the fan control pin of the fan connector. Install ubuntu for mac refind. I deleted my mac os and I had trouble getting my mac to recognize the Ubuntu installer when i pressed the alt key on boot. I had to re-install mac os install refind and then install Ubuntu again when it was recognized and delete mac os. This page is part of the documentation for the rEFInd boot manager. Using refind-install under Linux or Mac. An Ubuntu image, you can install rEFInd via its. Refind only shows recovery hd for mac osx, stages a “coup” when booting into mac osx 1 rEFInd Boot Manager stopped working after installing Ubuntu 17- MacBook Pro Dual Boot. Install rEFInd. RELATED: How to Install Windows on a Mac With Boot Camp rEFInd is a boot manager that will allow you to choose between Mac OS X, Linux, Windows, and other operating systems when you boot your computer. Note: For some reason, although I was able to install Ubuntu 10.10 from a CD to my 32-bit Mac Mini, the Ubuntu 12.04 CD hung. A USB flash drive made from the same image file booted fine with the help of rEFInd, though. He then measured the impedance of the fan control circuit of the fan and the motherboard and was able to deduce (based on similar low voltage fan controller designs) that the missing component was either a low or no voltage jumper component. As such he then just bridged the two pads with small piece of wire and my mac mini has been working flawlessly for 2 years now! As Lui has measured this to be 0.2 ohms, I suspect that what has been done to mine is absolutely fine. - SB NOTEBOOKS, Samsung, PNY QUADRO, Gigabyte, WHISTLER, ACTON, AROZZI NORTH AMERICA, CORSAIR, MATTEL, ZOTAC, WORRYFREE GADGETS, WESTERN DIGITAL-MOBILE SINGLE, HP INC. My friend doesn't believe that this component would have been a capacitor. Hope this helps! It would have been even more helpful if I didn't already find the answer on my Mac!;) I just bought a MacMini mid-2010 second hand. It has an SSD in it, and even though the body was completely cool, the fan was running at maximum speed, which is quite distracting.
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