Problems with fan and power after hard drive upgrade.

[E-Tech]

Hi, just upgraded my 250gb hard drive to a Seagate 500gb Barracuda. I have been having some problems with the imac i get a kernel error to power off the unit and the fans are super loud I thought it was a bad power supply since all the LEDS are green. I swap it out and I still have the kernel error I tried resetting the memory thing by holding option, command and p r and still no luck.

Any ideas? and thanks in advance.

 

[derbothaus]

There is a thermal component that needs to be installed correctly on certain iMac's or the fan's take off. Take it into Apple and have a proper tech do the install or maybe iFixit can help or maybe some info here.
https://forums.macrumors.com/threads/808178/

 

[panzer06]

Any older iMac with a std 250GB HD does not have the fan issues of the 21.5/27 models. Older macs used the external sensor stuck directly on the drive. Usually fan issues on these older iMacs are related to bent/broken or misaligned pin contacts when reconnecting the sensor or failing to get the sensor to stay stuck to the drive.

Cheers,

 

[derbothaus]

Any older iMac with a std 250GB HD does not have the fan issues of the 21.5/27 models. Older macs used the external sensor stuck directly on the drive. Usually fan issues on these older iMacs are related to bent/broken or misaligned pin contacts when reconnecting the sensor or failing to get the sensor to stay stuck to the drive.

Cheers,

Either way. Check the thermal sensor.

 

[panzer06]

Either way. Check the thermal sensor.

Indeed that should resolve the fan noise, but I'm at a loss to explain the kernel errors. Don't know why changing the drive would cause that unless a clone or restoration was corrupted. Perhaps a fresh OS X install would fix that.

Cheers,

 

[E-Tech]

4SNS/1/40000000 :'TLOP- 131.000 Error code I'm getting when Im doing built in diagnostic.

 

[E-Tech]

Does anyone know what that means?