MY CREATIVE ENGINEERING: How to Repair Noisy, Squeaking & Humming Ceiling Fan | Replace Capacitor & Bearing

Today, I want to show you how to troubleshoot and repair a noisy ceiling fan. In addition, I will service and deep clean this fan. When you hear humming or squeaking coming from your ceiling fan, it's usually because some of its components are faulty.

Step 1: Diagnosis fan

If your fan makes a squeaking noise, then your fan maybe have bearings failure.
For humming problems, It can be faulty board or part installation (fan covers).
I will show you how to repair squeaking and humming noise problems in this post.

Step 2: Removal cover

Turn off the fan switch. It is recommended to isolate all power supplies from your house for safety reasons.
First, open the fan rod cover and remove the wiring supply from the terminal block.
Cut cable tie and remove safety wire and cotter pin.
Remove nut and bolt from fan rod, then remove the fan.
Remove another cotter pin, nut, and bolt, then remove the fan rod.
Remove the top cover (3 screws).
Remove main PCB cover and secondary terminal block wiring.
Remove 4 fan blades (2 screws each blade).
Remove PCB wiring using soldering iron.
Remove terminal block, PCB cover, safety wire, and bottom cover (3 screws).
Remove IR cover (1 screw behind the main rod fan).
Move the wiring into the main fan rod to remove the inner top cover.
Remove the secondary inner top cover (3 screws). Tap a little bit to lose it, then you can easily remove the inner top cover.
Remove the plastic inner bottom cover (4 screws).
Remove the metal inner bottom cover using 3 jaws puller.
Remove bottom and top bearing using 2 jaws pullers.
Remove PCB from IR PCB cover.
Remove earthing wire from the fan rod.
Clean and rinse covers. For electronics parts, just use a brush and wipe any dust accumulated.

Step 2: Installation

If your fan has a squeaking noise problem, replace or lubricate both bearings. Recommend replacing the bearing for good practice. The picture below shows the comparison between old and new bearings.
Install the fan parts and components in reverse order of removal. Note: Put some grease on the bearing.
If your fan has a humming noise problem, usually caused by a capacitor defect or not installing fan covers.
Check capacitance for these 4 capacitors using a multimeter or ESR meter. Make sure the capacitance is within the range.
In my case, I need to replace 0.1 uF because the tolerance capacitance value is out of range.
Continue to install the parts and components in reverse order of removal.
Lastly, on the main power supply and switch on the fan.
No more noise coming from a fan.