7. Check the Fuse, Coil, and Regulator
Fuses, coils, and regulators are important components in charging circuits. Damage to any of these components may cause charging problems.
How to Do:
- Use a multimeter to check the fuse. A broken fuse must be replaced.
- Check the coil and regulator to make sure everything is working properly.
- Replace the damaged components with new ones.
8. Warm up or Replace the Charging IC
The Charging IC is the component that regulates the charging process. If the Charging IC is damaged, the phone cannot charge the battery.
How to Do (Requires Advanced Skills):
- Heating the charging IC with a heating device may temporarily fix the poor connection problem.
- Replacing the charging IC with a new one is a more permanent solution.
- This process requires high soldering skills and specialized tools. It should be done by an experienced technician.
9. Heat, Re-ball, or Replace Power IC
The Power IC regulates the power distribution in the mobile phone. Damage to the Power IC can affect various functions, including charging.
How to Do (Requires Advanced Skills):
- Heating the power IC can temporarily fix the problem of poor connection.
- Re-balling is the process of replacing the lead ball on the IC to ensure a good connection.
- Replacing the power IC with a new one is a more permanent solution.
- This process requires high soldering skills, specialized tools, and an understanding of mobile phone schemes. It should be done by an experienced technician.
Repairing the inside of a phone requires technical expertise, the right tools, and knowledge of phone diagrams. If you are in doubt or inexperienced, it is best to leave the repair to an experienced technician.
Doing repairs yourself may result in your phone’s warranty becoming invalid. Be sure to always exercise caution and follow the correct safety precautions when using electronic equipment.