imac hard drive thermal sensor bypass

To fix either of these two issues, you will have to open the system again, and then reseat the LCD temperature sensor or flip the temperature sensor connected to your hard drive. 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. You don't jump and use software. Recently the Mac-centric retailer and supply company "Other World Computing" outlined a potential issue where people upgrading their iMac's hard drives may simply have incorrectly reassembled a temperature feedback control when reassembling their systems.

Be sure to check us out on Twitter and the CNET Mac forums. Have a fix? 98 Get it as soon as Wed, Nov 4 e-mail us! Comments? speed. This is due to the replacement hard drive not reporting its temperature to the motherboard. Is there's a way that I can disable the sensor … 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. By using our Services or clicking I agree, you agree to our use of cookies. Software solution will bypass the hardware sensor and ask the hard drive, via software, what it's temp is and then adjust the fans. Another issue that Other World Computing outlines, is where the temperature feedback for the new hard drive itself may be improperly connected. 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. Disable Hard drive sensor (iMac) after HD swap. Remove the previous hard drive's pcb, connect the sensor into that board and tape it around to prevent this board touching to any live component, tape the old pcb behind the new hard drive. © 2020 CNET, A RED VENTURES COMPANY. We delete comments that violate our policy, which we encourage you to read. Quickest solution. Press J to jump to the feed.

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This is due to the replacement hard drive not reporting its temperature to the motherboard. 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 . Gee, won't it be just quicker and safer to use this: OWC In-line Digital Thermal Sensor for iMac 2011 Hard Drive Upgrade.,,

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. 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.

I'd like to do it with a NON permanent solution.

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 … If so then you may have overlooked a simple detail or two upon reassembling your system. 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.

In order to replace an iMac's hard drive, you have to open the front of the system by using special tools to lift off the glass, then get underneath a number of components to reveal the hard drive bays. Discussion threads can be closed at any time at our discretion. An unofficial community to discuss Apple devices and software, including news, rumors, opinions and analysis pertaining to the company located at One Apple Park Way.

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. Be respectful, keep it civil and stay on topic.

All iOS - iPhone, iPad, iPod touch, Apple TV & iTunes, Mac, iPhone, iPad and iPod Help & Troubleshooting, Intel-based Macs: Resetting the System Management Controller (SMC),

While not a trivial task, it is definitely doable with the proper know-how, such as following some of the guides available at iFixIt and other sources. It's working for me and I've used it for years with my mid 2010 iMac. 2011 iMac hard drive thermal sensor workaround? Try "HDD fan control” or “Macs Fan Control” — theres even a version that works under Windows / Boot Camp. Press question mark to learn the rest of the keyboard shortcuts. I was hoping to find a cheaper hardware fix, but this should work.... New comments cannot be posted and votes cannot be cast.

But I'm not sure which holes on the end equate to wire 2 and 7., OWC sells a sensor:,

This works for any third party HD or SSD. I've read in a few places ( that I can simply short the temperature reporting cables to get around this problem. Does anyone have a pinout of the apple cable so I know which holes to put the wire in? However, some people who have done this have found their iMacs no longer give a relatively noiseless computing experience, and end up blaring their cooling fans at the highest speeds. 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. Canada's Mac, iPod and iPhone Community. This detector has relatively sensitive connections, so even if properly seated in its socket during reassembly, it may have an improper connection that results in the fan blaring at high speeds since no feedback is present.

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