- Use this guide when the air unit loses video during operation and you need to replace the coaxial cable as part of troubleshooting.
- One new coaxial cable
- Tweezers
- 704 silicone adhesive
- Remove the air unit housing and take out the PCB. The disassembly procedure varies by air unit model and is not covered in detail in this guide.
- Carefully use tweezers to disconnect the coaxial cable connector.
- Lift one edge of the connector and separate it vertically from the PCB. Do not pull or pry the connector sideways, as this may damage the connector or PCB.

- Use the same method to carefully disconnect the coaxial cable from the camera.

- Connect the new coaxial cable to both the air unit and camera.
- Align each connector directly above its socket, press it straight down vertically, and make sure it is fully seated.

- If the video issue has been resolved, apply a small amount of 704 silicone adhesive to both sides of each coaxial cable connector to help secure it in place.
Coaxial cables from different manufacturers may not be compatible. Use replacement coaxial cables purchased through official CADDXFPV or Walksnail channels.
Be careful when disconnecting the coaxial cable to avoid damaging the PCB or coaxial cable connectors.