Drone may encounter some common faults during use. Understanding these common faults and their solutions can help users troubleshoot problems faster and ensure safe and stable flight. The following are some common drone faults and their solutions:

1. The drone cannot start or the battery cannot be charged
Fault manifestation:
The drone cannot be turned on, or there is no response after pressing the start button.
The battery cannot be charged, and the charging indicator light is off or flashing.
Possible causes:
The battery is too low or damaged.
Battery contact is poor.
Charger is faulty or incompatible.
Internal problem with the drone battery.
Solution:
Check the battery power: Make sure the battery power is sufficient and try to charge for at least 30 minutes before starting the drone.
Check the battery connection: Make sure the battery is properly installed and the battery connector is in good contact with the drone.
Replace the charger or battery: If the battery cannot be charged, try replacing the charger or battery. If the battery has been used for too long and loses performance, consider replacing the battery.

2. Unstable flight or drifting
Fault manifestation:
The drone deviates from the planned path during flight and drifts or vibrates.
Unable to maintain levelness and unstable flight attitude.
Possible causes:
GPS signal is weak or interfered.
Battery power is low or battery is aged.
Flight control system or sensor failure.
There is strong wind or magnetic field interference in the flight environment.
Solution:
Check GPS signal: Make sure the GPS signal is strong and stable during flight, and avoid flying in an environment with weak GPS signal (such as indoors or in areas with dense tall buildings). You can try to restart the drone to reacquire the signal.
Calibrate sensors: Calibrate the sensors of the flight control system before flight, including gyroscope, magnetometer (compass), and accelerometer.
Check battery health: If the battery power is low or the battery is aged, flight stability may be affected. Make sure the battery is in good working condition.
Avoid environments with high wind speed: Avoid flying in strong winds, as strong winds may cause the drone to fly unsteadily.

3. Flight controller loses connection or signal loss
Fault manifestation:
When operating the remote controller, it is impossible to establish a connection with the drone, or the connection is interrupted, and a "signal loss" warning appears.
During the flight of the drone, the remote control signal is suddenly lost.
Possible causes:
Communication signal interference between the drone and the remote controller.
The remote controller battery is low.
The drone is far away from the controller and exceeds the flight range.
Solution:
Check signal strength: Make sure the signal strength of the remote controller is good when the drone is flying. Try to avoid flying in an environment with strong signal interference, such as near high-voltage lines, between urban buildings, etc.
Check the remote controller battery: If the remote controller battery is low, it may cause unstable signal. Make sure the remote controller battery is sufficient.
Restart the remote controller and drone: Try to restart the remote controller and drone to reconnect the signal.
Return to the take-off point: If the signal is lost, many drones support the automatic return to home function (Return to Home), which can be used to let the drone automatically return to the take-off point.

4. Battery overheating or abnormally short flight time
Fault manifestation:
The drone battery overheats during charging or flight, or the flight time is significantly shorter than normal use.
Possible causes:
Battery damage or aging.
Long-term rapid charging or improper use of batteries.
Battery overload during flight.
Solution:
Check battery health: If the battery has been used for a long time, performance degradation may cause overheating or shortened flight time. It is recommended to replace the battery.
Avoid flying in high temperature environments: Avoid flying in high temperature environments. Drone batteries are very sensitive to temperature and overheating may damage the batteries.
Avoid overcharging when charging: Avoid using incompatible chargers and fast charging. Long-term charging will affect battery life.

5. Camera screen shakes or images are blurred
Fault manifestations:
The images taken by the drone camera appear blurred, shaken or unstable.
The image processing system is abnormal, and the images are lost or delayed.
Possible reasons:
The lens or gimbal is not properly fixed or calibrated.
The gimbal cannot be stabilized due to excessive wind.
Drone camera hardware or software failure.
Solution:
Check the stability of the gimbal: Make sure the camera gimbal is firmly installed to avoid looseness. If there is shaking, there may be a problem with the gimbal motor or stabilization system.
Calibrate the gimbal: Most drones support automatic or manual calibration of the gimbal. Perform a gimbal calibration to ensure stability.
Avoid excessive wind: Avoid using the camera to shoot in windy weather during flight. Strong wind may affect the stability of the image.

6. Failure to return home or loss of return home function during flight
Fault manifestation:
The drone cannot start the return to home (RTH) function, or the path is wrong during the return process.
The drone fails to return to the take-off point according to the preset path when returning home.
Possible reasons:
GPS signal is unstable or lost.
The drone loses connection with the remote control during flight.
Software or firmware failure.
Solution:
Ensure that the GPS signal is normal: Check the GPS signal strength in the flight area and avoid flying in areas with poor signal.
Restart the drone: If the return home function is not normal, you can try to restart the drone and check whether the firmware is the latest version.
Manual return home: If the automatic return home fails, the pilot can manually control the drone to return to the take-off point through the remote control.

Summary
Common failures of drones usually involve batteries, flight control systems, remote control signals, sensors and camera systems. When encountering these problems, most of the failures can be effectively solved by checking the equipment, restarting, updating firmware, calibrating sensors, or replacing damaged parts. The best prevention method is to perform regular maintenance and inspections to ensure that the drone is in good working condition before flying.