FPV Troubleshooting Guide: Fix the Most Common Problems Fast

Before diving into complex debugging, always start with the basics. Remove props before bench testing. Check your battery voltage with a multimeter. Verify all solder joints are shiny and solid. A cold solder joint is the root cause of more FPV problems than any other single issue.

When your goggles show nothing:

• Verify the VTX and goggles are on the same channel
• Check the camera wiring — is it getting power?
• Try a different antenna
• Is the VTX antenna connected? Running a VTX without an antenna can damage it

Work backwards: goggle → VRX → antenna → VTX → camera. Isolate each link.

Connect to Betaflight and check the Arming Disable Flags in the Setup tab. Common causes:

• Throttle not at zero (adjust endpoints)
• Accelerometer not calibrated (calibrate on level surface)
• RX loss (check receiver binding and protocol)
• GPS not locked (if GPS rescue is enabled)

The arming flags tell you exactly what's wrong.

Before every first flight after a repair:

1. Smoke stopper on first power-up
2. Verify motor direction in Betaflight Motors tab
3. Props off for motor testing
4. Check failsafe behavior (turn off radio, verify disarm)
5. Range test your radio link
6. Verify OSD elements are visible in goggles

Most FPV problems are preventable with regular maintenance:

• Conformal coat your electronics for moisture protection
• Check antenna connections after every crash
• Inspect frame screws for tightness
• Clean motor bearings periodically
• Keep spare antennas, props, and standoffs in your field kit