How to Repair or Replace the Knee Joint on a 3-Blade KDK Wall Fan - Step-by-Step Guide

In today's tutorial, we will guide you through the process of repairing or replacing the knee joint of a 3-blade KDK wall fan. Follow these steps to get your fan back in working order and enjoy a cool breeze once again.

Replace knee joint wall fan.

Step 1: Safety First

1. Before you begin, make sure to unplug the fan from the power source. Safety is always the first priority when working with electrical appliances.

Step 2: Remove the Fan from the Wall

1. Carefully remove the fan from its wall mount. It might be helpful to have an extra pair of hands to hold the fan steady while you unscrew it from the mount.

Step 3: Disassemble the Fan

1. To access the knee joint, you need to remove the fan guard and blades. Use a screwdriver to remove the screws holding the guard in place, then carefully detach the blades.
   
   

   

   Remove the front fan guard.

   
   

   

   Remove fan knob

   
   

   

   Remove the back fan guard.

   
   
2. Locate the broken knee joint and use your tools to unscrew it from the fan. Make sure to keep the screws in a safe place, as you will need them for the new joint.
   
   

   

   Remove broken knee joint.

   
   
3. Next, you need to remove the main PCB in the control switch compartment to make space for the new knee joint. This step is crucial for proper installation.
   
   

   

   Unscrew compartment.

   
   

   

   Desolder wire.

   
   

Step 4: Swap Components

1. Take the components from the broken knee joint and attach them to the new replacement joint. Ensure everything is fitted securely. 
   
   

   

   Swap components.

   
   

   

   New replacement knee joint.

   
   

Step 5: Assemble the Fan

1. Position the new knee joint in place and secure it with the screws you saved earlier. Tighten them firmly to ensure the joint is stable.

   

   Position the new joint to its original place.

   

   Put some grease on moving parts.

   
   
2. Now, reinstall the other components in the reverse order of removal. This includes the fan blades and the guard.
3. Reassemble the fan by reattaching the blades and the fan guard. Make sure everything is tightly secured to avoid any issues during operation.

Step 5: Test the Fan

1. Plug the fan back in and turn it on to make sure it's working properly. Check that the new knee joint allows the fan to oscillate smoothly and that all functions are operational.

   

   The fan rotates in normal condition.

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

Shopee:

1. Spanner Set
2. Screwdriver Set
3. Knee Joint KDK

Lazada:

1. Spanner Set
2. Screwdriver Set
3. Knee Joint KDK

Aliexpress:

1. Spanner Set
2. Screwdriver Set 
   
   

Video:

And that's it! You've successfully replaced the knee joint of your wall fan. Enjoy your newly repaired fan! For more DIY tips and tutorials, be sure to subscribe to our channel and check out our other videos. Thanks for watching!