Hdd sensor iMac 27

[MDY]

A customer asked me to replace his iMac 2011 hdd 1TB with SSD and told me that I should replace the hdd sensor also, as fan will speed fastly. What he mean? I dont see hdd sensor in this model.
I read about and seems that fan will speed fast randomly. Any solution for it?

 

[raainxx]

it's normal on a imac 2011 you need to use a software to lock manually the speed fan (ex: macfancontrol)
or use a adapter owc like that:https://eshop.macsales.com/item/OWC/DIYIM27SSD11/

 

[dukefawks]

Connect pin 11 of the SATA power connector to GND. Pin 11 will be between 2 GND pins. I usually put solder on the HDD PCB between pin 10/12 and 11.

 

[MDY]

Connect pin 10,11,12 is ok for 2009 and 2010 model also?

 

[dukefawks]

No, why would that work on 09/10 models when they have a separate cable?

 

[iambehr]

Any iMac with the separate cable, whether it has a temp sensor or a plug for the HD can be safely bridged. The SMC will just read the HD temp as 0 degrees and keep the fan at normal speed.

 

[MDY]

How do you do the bridged on 2009-2010 models?

 

[iambehr]

I solder a bridge at the base of the hd temp connector on the main logic board. Note that you must be careful to not drop excess solder across the board anywhere. This only works if you want the fans to spin at low speed all of the time. If you want them to spin faster you must use a fan control, as the reported temp is now always 0.

 

[MDY]

If you put some resistor?