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iPhone XR no booting fault maintenance
Machine model: iPhone XR
Malfunction: no display suddenly turns on no booting when in use.
Maintenance process:
iPhone XR turns on no booting, and the customer says to play in bed. mobile phoneSuddenly no display high temperature no booting.
1. The number of removed batteries BTB connector 1300 is normal, and the power leakage is 500mA. The main board high temperature.
2. Remove the motherboard, remove the front and rear covers, the u3100 IC high temperature on the edge of Colophony (Solder)CPU. After reading the drawing VDD boost Short circuit, put Colophony (Solder)on all places where Short circuit is connected, and hang Capacitor at the back. The single-layer motherboard is easy to maintain. 
iPhone XR no booting fault maintenance Figure 1.
iPhone XR no booting fault maintenance Figure 2.
iPhone XR no booting fault maintenance Figure 3.
iPhone XR no booting fault maintenance Figure 4.
