Phone charging problems

There are few types of charging problem such as not charging, no charging response and charger not supported.

• Issues of "not charging" shows on a display when a charger is being plug in. This problem occurs when a required current or voltage is not enough to boost up and charge the mobile phones battery. One reason for the occurrence of this problem is a faulty BSI line. A BSI line is a battery size indicator that tells the charging control circuit the battery working status. The battery has a BSI output indicator terminal that is connected to its negative terminal with desired value of resistor on it.

• Another charging problem issue is the No charging response when a battery charger is plug-in. A faulty protection circuit section is a major cause of this. It occurs when there is no voltage delivery to the charging circuit indicators and controls. 

• If the protection circuit breaks down, it will result to "charging no response" situation. A check of all components for short and open circuit starting from the fuse, to the coil and diode.

• Charger not supported problem is caused by a faulty BTEMP thermistor component.  BTEMP means battery temperature. It monitors the battery temperature status during a charging status. If BTEMP thermistor is faulty it won't allow any charger to proceed to charging stage.  

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