repair of vivo S1 Pro mobile phone without charging

There are only two capacitors and one power supply on the 5V path. After disassembling the machine, the machine was burned, and it was found that none of them gave off heat, but the board gave off heat.

Machine model: vivo S1 Pro

Fault phenomenon: the mobile phone is not charged, and the current detector directly turns off the light when charging.

Fault analysis: This fault is the short circuit of 5V charging channel, which is a job of collecting money.

Maintenance process:

Maintenance of vivo S1 Pro mobile phone without charging Figure 1

This kind of board short circuit, we can only separate the chip foot with green oil, take a thick line and fly directly to the 5V foot of the tail socket. In order to make the circuit less detours, you can pad a scrapped IC above the original chip and frame the circuit. Pay attention to using thick lines, because thin lines are easy to burn out.

After the installation, the mobile phone can be charged normally and the fault can be repaired perfectly.