The disassembly and repair methods are as follows:
1. Use a screwdriver to unscrew the back cover of the headlight.
2. Disassemble the battery and remove it.
3. Gently rotate and remove the front reflector cup and lens.
4. If you need to replace the LED light, you can gently unscrew the LED prism and insert the new LED light.
5. If you need to replace the circuit board or other components, you must carefully disassemble the internal components of the headlight and be careful not to damage the circuits or electronic components.
6. Once the repair is complete, reinstall all components and make sure they are secure.