Troubleshooting
Brushless motor won't spin? Follow this step-by-step guide: check the Hall sensor supply (5V/10V/15V), test signal switching, inspect phase wires, and isolate controller or power faults — with a full diagnostic flowchart.
Charger dead, battery overheating, or range falling short? Follow this fault-tree guide: indicator-light checks, 5A fuse and wiring tests, overcharging and undercharging causes, plus battery safety rules — fix the right part, in the right order.
E-bike motor won't spin — or spins non-stop? Follow this flowchart-based guide: throttle and controller checks, battery wiring and fuse tests, brake lever cut-off diagnosis, motor supply test, and Hall sensor inspection.
E-bike dead, display dark, or motor won't stop? Follow this general troubleshooting flowchart: battery and display checks, supply voltage test, system power-up, motor test, throttle and brake cut-off isolation, then wiring harness and connector diagnosis — locate the faulty part step by step.
Learn how to diagnose and repair common electric bicycle faults, including electrical and mechanical problems, troubleshooting steps, and quick repair methods.
Learn how to test and diagnose electric bicycle battery faults, including sulfation, short circuits, self-discharge, and 22 real repair cases.
Learn how to test and troubleshoot electric bicycle chargers, including high-voltage and low-voltage faults, repair steps, and 36 real repair cases.
Learn how to detect and diagnose electric bicycle motor faults, including brushed and brushless motors, testing methods, and 24 real repair cases.
Learn how to test and troubleshoot electric bicycle controllers, including brushed and brushless types, MOSFETs, Hall sensors, and power supplies. Includes 40 real repair cases.
Learn about electric bicycle instrument types, including analog, LCD, LED, and smart displays, plus speedometer and odometer troubleshooting. Includes 10 real repair cases.