Inspect in this order
- Battery: swelling, puncture, denting, heat or damaged contacts.
- Propellers: cracks, chips, bending, wrong pairing or loose screws.
- Motors: free rotation, grinding, shaft alignment and unusual resistance.
- Arms: cracks, hinge movement, deformation and motor-mount alignment.
- Gimbal: obstruction, mount damage, uneven position and exposed ribbon cable.
- Shell and electronics: separation, exposed wire, moisture, smell or error messages.
Match the symptom
Vibration
Start with propellers, screws, motors and arms.
Motor not spinning
Do not force it; inspect for debris, shaft damage, resistance and motor errors.
Gimbal overload or stuck
Remove the cover, check for obstruction and inspect mounts before assuming the camera is faulty.
Bent or cracked arm
Treat as structural damage and do not fly.
DIY or professional repair?
A correctly identified propeller is an approachable repair. Arm replacement, soldering, gimbal ribbon work, electronics and calibration-dependent repairs are advanced and can justify professional assessment.
Part compatibility after a crash
Internal arms, motors, shells and gimbal assemblies should be treated as model- and position-specific unless the exact part number is verified. Do not infer interchangeability from a Mini 4 Pro listing.