Fix Your Stuff Community Store

Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB GDDR5 Video RAM

597 Questions View all

Options

MBP fans running well over designed speed.

Hi,

Recently the fans in my MBP have randomly started spinning up to like 10000rpm, way past what the fan was designed for. Everytime it happened I shut down the computer to avoid damage, and when I turned It back on again it would be fine. It happened again today and this time, it's persistent. On boot camp, the computer runs really hot and this only happens while doing something such as rendering.

Is this a faulty fan, or could this have something to do with the logic board sending way too much power to it (I find that unlikely because it always fixed itself). I already tried an SMC reset, and opened the laptop to confirm it was indeed the fan.

Here's a video of the issue: https://youtu.be/ArGPcoQJkMQ

It's ONLY the right side fan.

Thanks,

John.

Answered! View the answer I have this problem too

Is this a good question?

Yes No
Score 0
1 Comment

You'll need to get some deeper diagnostics to figure this out. I would start off running the onboard diagnostics to see if something pops up. Press and hod theD key when booting up.

Reference: Mac startup key combinations

If that didn't give you a clue give this app a try: TG Pro

Let us know what the error message in diagnostics. If you end up using TG Pro paste a screenshot of the main window (make sure you expand it so all the sensors are visible)

Adding images to an existing question

by

Add a comment

2 Answers

Filter by:
Most Helpful Newest Oldest
Chosen Solution

Options

From my experience- it could be fan bearings. I had similar issue and all time help if I hit fan in the middle - but just for few minutes and after similar “sound”.

Was this answer helpful?

Yes No
Score 1

2 Comments:

Definitely not fan bearings. Happens instantly.

by

Not sure if I writed this right:

I had this sound all time - only if I hit fan in the middle, fan was running “normal” but just for few minutes then after I had this sound back.

by

Add a comment

Options

Clean out fan grills of fluff and debris.

Check the quality of thermal paste between cpu and gpu on logic board. Replace as neccessary.

Machine runs nice and cool now!

Was this answer helpful?

Yes No
Score 0
Add a comment

Add your answer

John Luelf will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 8

Past 30 Days: 18

All Time: 92