Apple a1466 notebook water damage repair without charging

Machine model: Apple a1466

Fault phenomenon: laptop water damage does not charge

Maintenance process:

Apple a1466 laptop water damage does not charge, get the machine detection boot normal, connect power does not charge, the power head lamp is not on.

Apple a1466 notebook water damage repair without charging Figure 1.

After dismantling the machine, traces of water damage were found.

Apple a1466 notebook water damage repair without charging Figure 2.
FPC connected to the small plate was burned directly, and BTB connector was also water damage.

Apple a1466 notebook water damage repair without charging Figure 3.

Replace BTB connector, change FPC,Connect the power supply, power headlamp or not, measure SMC_BC_Acok has 3.3V, sys_Onewire has 2.8V, but there is no wave pattern at the moment when the oscilloscope is powered on.

Apple a1466 notebook water damage repair without charging Figure 4.

After changing to EC, the power head lamp is on.Apple a1466 water damage does not charge, replace the small board FPC,FPC,BTB connector, replace the EC, the charging returns to normal, and the maintenance is completed.