iMac Early 2009 24-Inch Northbridge Running Hot

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iMac Early 2009 24-Inch Northbridge Running Hot

My iMac Early 2009 24-Inch computer's Northbridge Die and Heatsink are running hot. The fans come on and go full blast. This started a week ago and occurred only one time. Now it is any time I use the computer.

The newest symptom is the screens flickering. I had another monitor hooked up to the iMac. I since disconnected it because the flickering was so bad. Then the iMac screen started flickering late yesterday.

I'm running iStat to monitor the fluctuations in the temperature.

Current temperatures with fans running full blast (in F degrees):

Northbridge Die 159

Northbridge Heatsink 149

Northbridge Proximity 137

Could it be my Logic Board and/or the Graphic Card going bad?

Thank you.

iMac, OS X El Capitan (10.11.6), 8GB RAM, Glyph 3TB Ex. HD

Posted on Jun 26, 2018 2:22 AM

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SeaPapp

Level 7

26,486 points

Jun 26, 2018 5:34 AM in response to RK Rossi

RK Rossi wrote:

Could it be my Logic Board and/or the Graphic Card going bad?

Yes, or after 9years of use your iMac might just be packed with dust. You should run the Apple Hardware Test from disc two of your original OS install set and see if it reports an error How to use Apple Hardware Test on your Mac - Apple Support

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