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Redmi Note 9 Pro - Reboots, Power On flex Replacement

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How to disassemble device and fix restarting problem.

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Xiaomi Redmi Note 9 Pro restarts - Power On flex replacement

  1. Redmi Note 9 Pro - Reboots, Power On flex Replacement, Back cover removal: crwdns2935265:01crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Back cover removal: crwdns2935265:01crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Back cover removal: crwdns2935265:01crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Warm up the device to soften the adhesive.

    • Use plastic tools and a little isopropyl alcohol to separate the back cover.

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  2. Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard plastic cover removal.: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard plastic cover removal.: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard plastic cover removal.: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the Phillips screws that secure the motherboard cover.

    • Use a plastic opening tool to remove the cover.

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  4. Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard removal - part 1: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard removal - part 1: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard removal - part 1: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Lift up the flex connector to disconnect the battery.

    • Remove the main cameras.

    • Remove the SIM tray.

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  5. Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard removal - part 2: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard removal - part 2: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Motherboard removal - part 2: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Disconnect all flex cables:

    • Fingerprint sensor flex cable

    • Screen flex cable

    • Main flex cable

    • Coaxial antenna cable

    • Remove the Phillips screws securing the motherboard to the middle frame

    • Remove the motherboard.

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  6. Redmi Note 9 Pro - Reboots, Power On flex Replacement, Power on and volume buttons flex cable removal.: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Power on and volume buttons flex cable removal.: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Power on and volume buttons flex cable removal.: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Remove the Fingerprint sensor.

    • Remove the volume buttons plastic cap.

    • Use isopropyl alcohol to help remove the glued down flex cable.

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  7. Redmi Note 9 Pro - Reboots, Power On flex Replacement, Power on and volume buttons flex cable removal: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Power on and volume buttons flex cable removal: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Redmi Note 9 Pro - Reboots, Power On flex Replacement, Power on and volume buttons flex cable removal: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Use playing cards to remove the flex cable.

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To reassemble your device, follow these instructions in reverse order.

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