How to fix an iPhone XR stuck on Apple logo
Prior to commencing any repair procedures, disconnect the device completely from all electrical power connections to guarantee safety.
- The following implements are necessary for successful completion of the repair process:A Phillips head screwdriver is essential for disassembly and reassembly.
Consult the device's user documentation for precise specifications related to your particular model and supplementary safety guidelines.
Step 1 | How to fix an iPhone XR stuck on Apple logo
- Prior physical trauma involving a drop event is indicated for this device; following a charging cycle, the unit fails to power on, displays a persistent Apple logo, and exhibits continuous reboot loops.
- Subsequently, establish a connection between the power cable and the main circuit board; verification confirms the absence of electrical shorts or excessive current draw within the motherboard assembly.
Step 2
- Establish a connection between the mobile device and a personal computer to initiate a firmware update process, which will help determine if the internal system has sustained damage; this procedure requires utilizing a Restore-Easy Cable to place the device into its recovery state, followed by connecting a standard USB data cable.
- Commence the firmware update procedure, as the device is capable of accepting the new software; however, the device will continue to fail to power on normally and repeatedly reboot even after the update process completes.
Step 3
- A failure within the motherboard's circuitry is likely the cause of the problem; to proceed with diagnostics, detach the flex cable and subsequently remove the motherboard assembly.
- Secure the motherboard within a suitable holder, apply high-temperature tape to safeguard the connector, and then carefully remove the shielding cover using a vertical Hot Air Gun set to a temperature of 380°C.
Step 4
- Using a hot air rework station set to 280°C, individually examine the inductors near the power integrated circuit to identify any that exhibit movement, which would indicate unreliable solder joints.
- Should the inductors demonstrate secure mounting, and the device continues to unexpectedly reboot during charging, proceed with replacing the USB integrated circuit to further diagnose the issue.
Step 5
- Employ a Sculpture Knife to eliminate the existing thermal compound.Secure the CPU shielding cover in place utilizing high-temperature tape.Utilize a Hot Air Gun, set to 280°C, to eliminate the black adhesive surrounding the USB IC, subsequently prying the USB IC loose with the tool at 380°C, and then apply Paste Flux.
- Employ a Soldering Iron, calibrated to 365°C, to eliminate residual tin from the bonding pad.
- The application of Paste Flux facilitates subsequent soldering operations.
- A Sculpture Knife is the appropriate tool for the removal of thermal grease.
Step 6
- Employ the Hot Air Gun, maintaining a temperature of 380°C, to warm the rosin-saturated solder wick, facilitating tin removal.
- Introduce Paste Flux to the affected area.
- Carefully position a replacement USB IC into its designated location.
- Utilize the Hot Air Gun, set to 380°C, to execute the soldering process.
- Following the motherboard's return to ambient temperature, employ PCB Cleaner for thorough cleaning.
Step 7
- Establish an electrical connection between the motherboard and the power supply using the appropriate power cable.
- To initiate the boot sequence, momentarily bridge the ground connection to pin 10 on connector J4300.This action will confirm a standard boot current flow.Proceed with the physical installation of the motherboard into its designated mounting location.
- Establish a visual output by connecting the display cable and provide power by connecting the battery.
- Verify proper functionality by observing the device powering on as expected.
- Successful power-on indicates the system is responding correctly to the applied power.