Reason 1: the inner bearing clearance of electric bicycle is large Treatment: replacement of bearings   Reason 2: motor rotor sweep Treatment: repair of stator, fat tire electric bike and rotor Reason 3: magnetic steel loosening Treatment method: rebonded magnetic

If the damage of integrated circuit is detected, it is necessary to replace the integrated circuit. Disassembly integrated circuit When disassembled, heat printed circuit board with flame of wine lamp to form circuit pin pad, move printed circuit board quickly