Chosen Solution
Hi. I Add A SSD, Using: “OWC Internal SSD DIY Kit For All Apple 21.5” iMac 2011 Models w/ Tools", Then My iMac is Very Noise. Apple Hardware Test Said This Error. TG Pro Said: ODD 4350 RPM, CPU 4000 RPM. Please Help me. Update (04/20/2015) Thanks A Lot. This is the result on Temperature Gauge Pro.
Update (04/21/2015) This is My new status:
Update (04/21/2015) This is my (last) new status. Thank you Mayer! And every one!
I’ve had to replace the optical drive fan in several of these. Some of the fans can be fixed by simply pushing on the center of the fan to move it back in place.
JAIME, the problem is most likely related to the sensor of the optical drive fan. Replacing the sensor and/or the fan should resolve this. Try to start under Safe Boot mode. Follow this Apple TN" OS X: What is Safe Boot, Safe Mode?. Download and install this Temperature Gauge Pro. It should help show you what your sensors are telling you.
Follow what OT has above Also did you also get this: OWC In-line Digital Thermal Sensor for iMac 2011 Hard Drive Upgrade. You’ll need it if you are swapping the old HD for a SSD drive.
Boot my iMac on Safe mode and still is noisy. Dan, on what disk i need put this sensor: HDD (Old Original, WD 500 GB) or SSD (New, Recent Adding: Samsung 850 Pro 256GB).? Where can buy this fan or Sensor?
