Redmi mobile phone water damage screen malfunction repair

Redmi mobile phone water damage screen malfunction repair

Symptoms: customer descriptionmobilewater damage has been dropped, but it can be turned on normally. Sometimes the touch of the mobile phone occasionally fails.
Actual measurement: No touch failure was found at the beginning of the test after picking up the machine, and all other functions were normal.
Maintenance method: combine the description of water damage with the customer’s description, and communicate with the customer to explain that this phenomenon is generally unstable, and it should be caused by water damage. Disassemble the motherboard and accessories, and it is not obvious that there is slight corrode in the camera module seat and slight water damage in fingerprint seat.

Redmi mobile phone water damage screen failure repair Figure 1.

Redmi mobile phone water damage screen failure repair Figure 2.

The whole board was carefully observed under the microscope, and there was no trace of water damage in other places. The motherboard was cleaned with Cleaning solvent first, and then dried at low temperature for a period of time. The fingerprint and Camera BTB connector were cleaned and installed, and no abnormal touch reaction was found after testing for one day.