Idle Fan speed 4400 RPM after fan replacement

Several months ago the left side fan on my MBP died as the result of a worn bearing. The computer is covered under Apple Care so I sent it in to have the fan replaced. Ever since the fan was replaced the idle speed on both fans is in excess of 4K rpm even when the CPU shows minimal activity. SMC fan control is set to 2K rpm. iStat Nano widget displays temperature at 120 Degrees Fahrenheit and fan speed at 4500K. I took my MBP back to my local Apple authorized service center and told them what was occurring since having the fan replaced. From Hardin Apple service center in Arlington my MBP was shipped to Houston Texas where Apple Service Technicians replaced the Logic board. I have since reset the PMU by removing the battery and holding down the power button for 5 seconds. I have also run the Apple Hardware Diagnostic test using the install disc which showed no hardware malfunctions.
With the CPU 95% idle the fans should not be running anywhere near 4K. Despite two trips to Apple Service my MPB still has a fan probably which is not only annoying because of the increased noise but it is affecting my battery life as well. If anyone has any ideas as to how to fix this problem which I have not already attempted please post them. I am hesitant to send my MBP back for more service at this time due to their failure to fix the problem the first time or check the results. They were aware of the problem when I sent it in for service and when they returned it to me the same problem persisted. This type of service does not inspire customer confidence.

I'd be inclined to try an "archive and install" of the OS, Jason, and leave off any third party "add ons" like SMC fan control for the moment.
Alternatively if you have an external HD then you could try installing a "clean" copy of the OS on this and using it as the boot drive, to see if this overcomes the problem
There are OS software elements to the process of fanspeed control and if these are corrupted then the fans are likely to run at "failsafe" speed.
Another possibility may be that a temp sensor hasn't been properly re-connected, again resulting in "failsafe" sped operation.
Rod

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This question was solved.
View Solution.

Hi @funksoulbro ,
Welcome to the HP Forums!
It is a great place to find answers and information.
For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide Learn How to Post and More
I see that after you replaced the fan, when you tried to power on the notebook you noticed it was not charging.
You reopened the notebook and noticed you had failed to replace the power connector on the motherboard so you reconnected it.
Once you did that when you tried to power up the notebook the led adjacent to the power socket turns white but then goes to orange and remains.
If you disconnect the power connection you can boot up on battery and it works fine.
Here are two links that I think may help.
Using and Testing the AC Power Adapter
Battery Does Not Power Notebook or Hold a Charge
I hope this helps.
Sparkles1
I work on behalf of HP
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MSI GE60 with i7-3630QM - Could someone please readout idle fan speed?

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Quote from: Buluunee on 24-March-13, 00:06:01
i got gt70 however i think since the cpu is same the fan speed should be around same. for me idle - E3 turbo fan on - 72
That is very interesting, "E3"??? If you enable Turbo-Fan-Boost for 30 seconds, then disable it and wait for the fan to spin down completely, does it also revert to E3 or to a higher value?
The answer would most likely solve my problem.
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Mac Owners Support Group
Join Us @ MacOSG.com
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Go to Solution.

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https://forum-en.msi.com/index.php?topic=122757.0

Read this: >> Can anyone recommend me a Northbridge fan replacement? <<

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matand30,
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I have replaced the fan on my R61 myself 3 times. It failed the first time when it was 4 years old, and each time I replaced it with a used fan bought on EBAY. Maybe they were too used. All you need to do it yourself is a copy of a few pages from the Hardware Maintenance Manual, a tube of thermal paste, a screw driver and about 30 minutes of your time.
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This question was solved.
View Solution.

@Phileh
The fan part number is 650797-001 can be found on page 30
This one gets here, for example,
Component replacement procedures is on page 90
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Idle Fan speed 4400 RPM after fan replacement

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