Procedure :
1. Disassemble
2. Use Multi meter set into dc 10, check power input check
3. Use Digital Multi meter set into buzzer mode, check busted components
4. Remove and replace busted components
5. Assemble
6. Done
1. Disassemble
2. Use Multi meter set into dc 10, check power input check
3. Use Digital Multi meter set into buzzer mode, check busted components
4. Remove and replace busted components
5. Assemble
6. Done