Other World Computing has a detailed look at the proper orientation for these connections, so if you have an iMac (and especially a 2009 or 2010 model) that has blaring fans after a hard drive upgrade, then be sure to check out Other World Computing's article to see if you fell victim to this simple oversight. Cookies help us deliver our Services. Press question mark to learn the rest of the keyboard shortcuts. Quickest solution.

© 2020 CNET, A RED VENTURES COMPANY. 2011 iMac hard drive thermal sensor workaround? I'd like to take a piece of CAT5 wire, strip the ends, and jam them into the holes on the end of the SATA power cable. https://www.haught.org/2015/11/16/imac-2011-hd-thermal-sensor/, https://www.crystalidea.com/macs-fan-control, https://eshop.macsales.com/item/OWC/DIDIMACHDD12/.

Basically it replaces the internal sensor with an external one so SMC services work correctly in controlling the fans so your system doesn't over heat. Another issue that Other World Computing outlines, is where the temperature feedback for the new hard drive itself may be improperly connected. Comments? Have a fix? We delete comments that violate our policy, which we encourage you to read. Software solution will bypass the hardware sensor and ask the hard drive, via software, what it's temp is and then adjust the fans. For the 2009 and 2010 iMac systems, the Western Digital hard drives Apple used have swapped connections for the temperature feedback control, so while you may have seated the sensor connection into the same socket of the hard drive according to the instructions of a reputable guide or two, you may simply have swapped the poles of this connection.

speed. But I'm not sure which holes on the end equate to wire 2 and 7.

Does anyone have a pinout of the apple cable so I know which holes to put the wire in? I'd like to do it with a NON permanent solution.

It's working for me and I've used it for years with my mid 2010 iMac. I replaced the original hard drive in a 2011 27" iMac and now the computer fails hardware diagnostics and the fan spins at full speed. ALL RIGHTS RESERVED. Jumping the sensor will "trick" the system into thinking it's running supper cold and keep fan at min. I replaced my internal drive with a SSD and the hard drive fan is currently running at 5000rpm due to the fact that she's not getting the correct information from the HD sensor. Walmart's best early Black Friday deals: $99 AirPods, $49 Instant Pot and more, $99 AirPods and other early Black Friday deals available now, Best Buy's early Black Friday sale: There are still discounts on TVs, laptops and smart speakers, Discuss: Potentially fix iMac fan blaring after hard drive upgrade, incorrectly reassembled a temperature feedback control, check out Other World Computing's article. Post them below or Are your iMac's fans blaring at full speed after having upgraded or replaced its hard drive? This works for any third party HD or SSD. Some have speculated that the iMac may require special firmware from Apple in its hard drive to prevent the cooling fans from being maxed out; however, this may also not be the issue at hand. Deal4GO HDD Hard Drive Temp Temperature Thermal Sensor Cable Replacement for iMac 21.5" A1311 2009 2010 593-0998-A 593-0998 (Long: 7.68 inch) $6.98 $ 6 . In order to get to the drive, one of the steps in disassembly is to remove a temperature sensor cable that provides feedback if the LCD display gets too hot. Since the fan speeds and temperature feedback are managed by the Mac's system management controller (SMC), if this happens, the first course of action may be to attempt an SMC reset; however, this may not fix the problem.

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