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DavidDD1 Honor Student
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I replaced the power supply fan, but I stil have a noise.

HP H8 1234
Microsoft Windows 7 (64-bit)

I replaced the power supply  and the noise stopped! However, I still hear a pulsing sound, that I'm guessing is the fan on top  of the CPU. Could you please tell me what the correct fan is, how to clean the heat fins and or how to replace the heat sink and fan?

Thanks!

DavidDD1

 

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I replaced the power supply fan, but I stil have a noise.

@DavidDD1, welcome to the forum.

 

I suggest that you do a thorogh cleaning inside and out of the case.  You can use canned air to carefully blow the dust out of the fans and other components.  Also, using a small brush will help remove the dust from the fans.  Dust in the fans will cause many problems.  Here is a guide to help you with the cleaning.

 

Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.

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DavidDD1 Honor Student
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I replaced the power supply fan, but I stil have a noise.

The noise is a pitch that rises and falls rythmicly and begins when the computer is warmed up. It ends when I shut the computer off.

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I replaced the power supply fan, but I stil have a noise.

Thank you for the additional information, @DavidDD1.

 

The best way to identify where the sound is coming from is to open the case and try to isolate it.  Sometimes it is very difficult.  I have heard of capacitors making this sound when they were failing.

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Signature:

HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)

Custom build: Corsair 750D Airflow (Full Tower); MSI MEG z390 ACE motherboard; i9-9900K processor (OC'd 5.025); Corsair H150i cooler; 32 GB Corsair Vengeance Pro 3200 memory; MSI RTX 2080 Gaming X Trio video card; Samsung 970 Pro 512 GB; Samsung 860 EVO 1 TB

HP Spectre 360 Convertible; i7-7560U; 16 GB memory; Intel® Iris™ Plus Graphics 640; 512 GB PCIe® NVMe™ M.2 SSD; 13.3" diagonal 4K UHD UWVA eDP BrightView WLED-backlit multitouch-enabled edge-to-edge glass (3840 x 2160); Windows 10 Pro 64 with Windows Ink

HP Photosmart 7520 AIO

++++++++++++++++++
**Click the Thumbs Up+ to say 'Thanks' and the 'Accept as Solution' if I have solved your problem.**

Intelligence is God given; Wisdom is the sum of our mistakes!

___________________________
I am not an HP employee.
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DavidDD1 Honor Student
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I replaced the power supply fan, but I stil have a noise.

I opened the case and could not hear the noise. However, when I leave the case cover on, I hear the noise.

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