Samsung S8 clamping power leakage does not start up for repair

Machine model: Samsung S8
Fault phenomenon:Connect the power supply short-circuit current 93ma, start pin VCC 0.26v, press the start key to do nothing.

Samsung S8 clamping power leakage does not start up for repair Figure1.

Fault analysis:
Connect the power supply short-circuit current no booting, generally solve the problem of short-circuit current boot.
Maintenance process:
This kind of small short-circuit current is mostly the second end Related circuit. A component is damaged, which lowers the second end VCC or interferes with it.

Samsung S8 clamping power leakage does not start up for repair Figure2.

The two ends of the Inductor are connected to the Inductor on both ends of the chip. According to the description of the Inductor on both ends of the Inductor, the two ends of the Inductor are connected.

Samsung S8 clamping power leakage does not start up for repair Figure 3.

Remove the chip Connect the power supply and test the short-circuit current. Unexpectedly, first remove the adhesive power supply, take a detour, replace the main power supply, and then Connect the power supply test boot,pin 1 1.8V has come, boot also has a current, but there is no normal start-up current, because Samsung needs to self check a lot of chips, so first replace the camera PMU.