iPhoneX can not boot failure after charging

iPhoneX can not boot failure after charging

Machine model: iPhone X

Malfunction phenomenon: Mobile phone can’t boot

Maintenance process:

After receiving an iPhone X machine, the customer said that it was charged all night, and then it didn’t respond.
Dismantle the power meter, press the power button, and the instantaneous current will rise to more than 1A. If you don’t press the power button, you won’t Short circuit.
According to the past experience, it is common to burn the display circuit when charging all night, with emphasis on testing the display seat diode value first.
After a round of measurement, I found that there was a road 1V8 VCC Short circuit.

iPhoneX can not boot failure after charging Figure 1
Click Xinzhizao Soft to check Boardview, and have a look at many places along the way. It’s all focused on the motherboard, so take a look at separate.
Get the heating table ready, just about to start separate, wait a minute! Is it possible that the peripheral current is burned out? Look around carefully first.
After careful observation, finally found a Capacitor with some discoloration. Through the Boardview query, it’s just this way.

iPhoneX can not boot failure after charging Figure 2
Take out the grinder, carefully grind it off, install the test machine, and light up all the way into the system. It’s fixed.