How to Repair Noisy, Squeaking & Humming Ceiling Fan | Replace Capacitor & Bearing | F-MY14S

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

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

Step 2: Removal cover

1. Turn off the fan switch. It is recommended to isolate all power supplies from your house for safety reasons.
   
   

   
   
   
   

   
   
   
2. First, open the fan rod cover and remove the wiring supply from the terminal block.
   
   

   
   
   
   

   

   
   
3. Cut cable tie and remove safety wire and cotter pin.
   
   
   
   
   
4. Remove nut and bolt from fan rod, then remove the fan.
   
   
   
   
   
5. Remove another cotter pin, nut, and bolt, then remove the fan rod.
   
   

   

   
   
6. Remove the top cover (3 screws).
   
   
   
   
   
7. Remove main PCB cover and secondary terminal block wiring.
   
   
   
   
   
8. Remove 4 fan blades (2 screws each blade).
   
   

   

   
   
9. Remove PCB wiring using soldering iron.
   
   

   
   
   

   

   
   
10. Remove terminal block, PCB cover, safety wire, and bottom cover (3 screws).
    
    

    

    
    
11. Remove IR cover (1 screw behind the main rod fan).
    
    

    

    
    
12. Move the wiring into the main fan rod to remove the inner top cover.
    
    

    

    
    
13. Remove the secondary inner top cover (3 screws). Tap a little bit to lose it, then you can easily remove the inner top cover.
    
    

    

    
    

    

    
    
14. Remove the plastic inner bottom cover (4 screws).
    
    

    

    
    
15. Remove the metal inner bottom cover using 3 jaws puller.
    
    

    

    
    
16. Remove bottom and top bearing using 2 jaws pullers.
    
    

    
    
    
    

    

    
    
17. Remove PCB from IR PCB cover.
    
    

    

    
    
18. Remove earthing wire from the fan rod.
    
    

    

    
    
19. Clean and rinse covers. For electronics parts, just use a brush and wipe any dust accumulated.
    
    

    

    
    

    
    
    

Step 2: Installation

1. 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.
   
   
   
   
   
2. Install the fan parts and components in reverse order of removal. Note: Put some grease on the bearing.
   
   
   
   
   
   
   
   
   
   
   
   
   
   
3. If your fan has a humming noise problem, usually caused by a capacitor defect or not installing fan covers.
   
   
   
   
   
4. Check capacitance for these 4 capacitors using a multimeter or ESR meter. Make sure the capacitance is within the range.
   
   
   
   
   
5. In my case, I need to replace 0.1 uF because the tolerance capacitance value is out of range.
   
   
   
   
   
6. Continue to install the parts and components in reverse order of removal.
   
   
7. Lastly, on the main power supply and switch on the fan.
   
   
8. No more noise coming from a fan.
   
   

The link tools and components replacement I used in this video are listed below:

Tools/Components/Items (Shopee):

1. Screwdriver Set
2. Plier Set
3. Cable Tie
4. Jaws Puller (4 Inches)
5. Jaws Puller (6 Inches)
6. Spanner Set
7. Solder Core Wire (0.6mm)
8. Solder Flux
9. Tweezer ESD
10. Soldering Iron (ZD90S)
11. Multimeter UNI-T UT210E
12. Heat Shrink Tube
13. Bearing (6203ZZ)

Tools/Components/Items (Lazada):

1. Screwdriver Set
2. Plier Set
3. Cable Tie
4. 2 Jaws Puller (4 Inches)
5. 3 Jaws Puller (6 Inches)
6. Spanner Set
7. Solder Core Wire (0.6mm)
8. Solder Flux
9. Tweezer ESD
10. Soldering Iron (ZD90S)
11. Multimeter UNI-T UT210E
12. Heat Shrink Tube
13. Bearing (6203ZZ)
    

Tools/Components/Items (Aliexpress):

1. Screwdriver Set
2. Plier Set
3. Cable Tie
4. 2 Jaws Puller (4 Inches)
5. 3 Jaws Puller (6 Inches)
6. Spanner Set
7. Solder Core Wire (0.6mm)
8. Solder Flux
9. Tweezer ESD
10. Soldering Iron (YF-420A)
11. Multimeter UNI-T UT210E
12. Heat Shrink Tube
13. Bearing (6203ZZ)

Video:

That all from me. If you have any suggestions, please write in the comment section. Thank you for your time 👷.

Diagnose and Repair Motorcycle (Scooter) Not Charging Battery | Stator Coil | SYM Jet Power 125

Today, I want to show you how to diagnose and repair scooter SYM Jet Power 125 hard to crank/start due to a faulty alternator/stator coil. Here are some common symptoms of the faulty spark plug or bad spark plug, e.g., hard to start, engine run sluggish, no spark produced by the spark plug, the engine does not crank smoothly, etc.

References:

1. SYM Jet 4 125 Manual
   
   

Step 1: Diagnosis motorcycle

1. My battery is not charging even when I start the motorcycle and can cause a low voltage/dead battery.
2. You can see the battery voltage at 12.20 V and not increasing.
   
   
   
3. After the diagnosis of my motorcycle, I found that my charging system had failed. 4 common places that need to be troubleshot are the alternator, regulator, fuse, and wiring/connector.
   
4. Remove the 3 pin connector of the alternator.
   
   
   
   
   
5. Measure the resistance between the white wire on the alternator and the frame ground or green wire. If the resistance exceeds the standard, then change the alternator/stator coil.
   
   
   
   
   
6. Next, measure the resistance between the yellow wire on the alternator and the frame ground or green wire. If the resistance exceeds the standard, then change the alternator/stator coil. (refer to above picture).
   
   
7. In my case, both charging and lighting coil are below than standard value.  So, replace the alternator or stator coil.

Step 2: Removal of stator coil/alternator

1. Disassemble the body cover in sequence 1 → 2 → 3 as shown in the figure below. You can watch my previous video or post on how to remove body cover step by step.
   
   
   
   
   
2. Remove the fan cover (4 bolts).
   
   
   
   
   
   
   
   
3. Remove the cooling fan (4 bolts).
   
   
   
   
   
4. Remove a nut on the flywheel using special tools (pulley holder spanner) to hold the flywheel from turning.
   
   

   
   
   

   

   
   

   
   
   
5. Remove the flywheel with the flywheel puller.
   
   

   

   
   
6. Remove the 6 bolts for the pulse generator, stator coil, and cable guide.
   
   
   
   
   
7. Remove the connectors of the stator coil and pulse generator connector.
   
   

   

   
   

   

   
   
8. Untie the wiring, and remove the stator coil.
   
   

   

   
   
9. I buy this cheap OEM stator coil for SYM Jet Power 125.
   
   

Step 2: Installation

1. Install the spark plug in reverse order of removal.
   
   
2. Start and take the reading with a multimeter. You can see from the picture below the reading around 13 V ++ compared to before replacing the alternator.
   
   
   
   
   

The link tools and components replacement I used in this video are listed below:

Tools/Components/Items (Shopee):

1. Spanner Set
2. Screwdriver Set
3. Flywheel Puller
4. Puller Holder Spanner
5. SYM Stator Coil/Alternator

Tools/Components/Items (Lazada):

1. Spanner Set
2. Screwdriver Set
3. Flywheel Puller
4. Puller Holder Spanner
5. SYM Stator Coil/Alternator

Tools/Components/Items (Aliexpress):

1. Spanner Set
2. Screwdriver Set
3. Flywheel Puller
4. Puller Holder Spanner

Video:

That all from me. If you have any suggestions, please write in the comment section. Thank you for your time 👷.