Oppo A5 mobile phone charging abnormal repair

Oppo A5 mobile phone charging abnormal repair

Machine model: OPPO A5
Customer description: The mobile phone is not fully charged.
Test results: All functions of the mobile phone are normal, and the charging display is normal. After a period of time, the charging circuit is only 5ma.
Fault analysis: The fault should be checked from the charging connector sub-board. If the fault is on the main board, measure the charging connector charging connector BTB connector sub-board.

Oppo A5 mobile phone charging abnormal repair Figure 1.

First of all, if you have charging connector sub-board, you can replace it for testing. If not, directly measure the motherboard charging connector BTB connector sub-board, and find that 9 pin diode value is abnormal.

Oppo A5 mobile phone charging abnormal repair Figure 2.

Measure the connected components to make sure that D2903 is damaged. After removal, the fault will recover.

Oppo A5 mobile phone charging abnormal repair Figure 3.