Redmi Note 9 Pro Screen Replacement

Geschrieben von: Dominik Schnabelrauch

Kommentare: 3

Schwierigkeitsgrad

Moderate

Schritte

Zeitaufwand

1 - 2 Stunden

Einleitung

Use this guide to replace a cracked or broken screen on your Redmi Note 9 Pro.

If the frame is deformed, it's important to replace it to make sure the new screen will mount correctly and won’t suffer damage from uneven pressure.

If your battery is swollen, take appropriate precautions. Before disassembling your device, discharge the battery below 25%. The battery can catch fire and/or explode if accidentally punctured, but the chances of that happening are much lower if discharged.

Note: This guide instructs you to replace only the screen while leaving the original frame and motherboard in place. However, some replacement screens for this phone come pre-installed in a new frame (a.k.a. chassis), which requires a very different procedure. Make sure you have the correct part before starting this guide.

Before you begin this procedure, be sure to have a set of replacement adhesives for both the rear glass and the screen.

Werkzeuge

Ersatzteile

Schritt 1

Prepare an iOpener and apply it to the rear glass for at least two minutes to loosen the adhesive underneath.
A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

Schritt 2

Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.
If the rear glass is cracked, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed.
Lift the rear glass with the suction handle to create a small gap between the back cover and the frame.
In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.
Insert an opening pick into the gap you created.
Slide the opening pick to the bottom right corner to slice the adhesive.
Leave the opening pick in place to prevent the adhesive from resealing.

Schritt 3

Insert a second opening pick at the bottom edge of your phone.
Slide the opening pick to the bottom left corner to slice the adhesive.
Leave the opening picks in place to prevent the adhesive from resealing.

Schritt 4

If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener for one to two minutes to reheat it.
Insert a third opening pick at the bottom left corner of your phone.
Slide the opening pick along the left edge of your phone to slice the adhesive.
Leave the opening pick in the top left corner to prevent the adhesive from resealing.

Schritt 5

Insert a fourth opening pick underneath the top left corner of your phone.
Slide the opening pick along the top edge to slice the adhesive.
Leave the opening pick in the top right corner to prevent the adhesive from resealing.

Schritt 6

Insert a fifth opening pick underneath the top right corner.
Slide the opening pick along the right edge of the rear glass to slice the remaining adhesive.

Schritt 7

Remove the rear glass.
Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).
Secure the new rear glass with pre-cut adhesive or double-sided adhesive tape. After installing the rear glass, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond—a stack of heavy books works well.

Schritt 8

Use a Phillips screwdriver to remove the eleven 3.9 mm-long screws securing the motherboard cover.

Schritt 9

Insert the tip of an opening pick underneath the left edge of the motherboard cover.
Flip the opening pick sideways to pry up the motherboard cover.

Schritt 10

Use a pair of tweezers or your fingers to remove the motherboard cover.

Schritt 11

Use a spudger to disconnect the battery cable by prying the connector straight up from its socket.

Schritt 12

Use a Phillips screwdriver to remove the seven 3.9 mm-long screws securing the loudspeaker assembly.

Schritt 13

Insert an opening pick into the gap between the top edge of the loudspeaker assembly and the battery.
Use your opening pick to pry up the loudspeaker assembly.

Schritt 14

Remove the loudspeaker assembly.
During reassembly apply new adhesive where it's necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

Schritt 15

Use a spudger to disconnect the display cable by prying the connector straight up from its socket.

Schritt 16

Apply a heated iOpener or a heat gun to the screen to loosen the adhesive underneath. Apply the iOpener for at least two minutes.
The protective adhesive of the Redmi Note 9 Pro is very strong and it's hard to get underneath the display panel in the beginning. It is likely that you have to reapply the iOpener more than once.
A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the device.

Schritt 17

Once the screen is warm to touch, apply a suction handle to the bottom edge of the screen.
If your screen is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. Alternatively, very strong tape may be used instead of the suction handle. If all else fails, you can superglue the suction cup to the screen.
Lift the screen with the suction handle to create a small gap between the screen and the frame.
Insert an iFlex into the gap between the midframe and the screen.

Make sure to open between the display and the black frame. NOT between the black frame and the colored phone-body.

Felix Thren -

Schritt 18

Insert an opening pick above the iFlex.
Slide the opening pick to the bottom right corner of the screen to slice its adhesive.
Remove the iFlex.
Leave the opening pick in place to prevent the adhesive from resealing.

Schritt 19

Insert a second opening pick at the bottom edge and slide it to the bottom left corner of the screen to slice the adhesive.
Leave the opening pick in place to prevent the adhesive from resealing.

Schritt 20

If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener or heat gun for 1-2 minutes to reheat it.
Insert a third opening pick underneath the bottom left corner of the screen.
Slide the opening pick along the left edge of the screen to slice the adhesive.
Leave it in the top left corner to prevent the adhesive from resealing.

Schritt 21

When you slice near the front facing camera, insert only the tip of the opening pick (about 2-3 mm) to avoid damaging or smearing the camera.
Insert a fourth opening pick at the top left corner of the screen.
Slide the opening pick along the top edge of the phone to slice the adhesive.

Schritt 22

Insert a fifth opening pick and slide it along the right edge of the phone to slice the remaining adhesive.
Do not try to remove the display all the way yet, the display cable is still threaded through the frame.

Schritt 23

Thread the display flex cable through the gap in the midframe and remove the screen.
Compare your new replacement part to the original part—you may need to transfer remaining components from your old screen to your replacement part.
Apply new adhesive where it's necessary after cleaning the relevant areas with isopropyl alcohol (>90%).
During reassembly, follow this guide in case you're using a pre-cut adhesive card.

Abschluss

If possible, turn on your device and test your repair before installing new adhesive and resealing.

Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.

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

The best way to secure the new screen is to apply a sheet of custom-cut double-sided tape to the back of the screen.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

Tinte & Feder

Dominik Schnabelrauch

Mitglied seit: 23/11/16

167866 Reputation

2 Kommentare

Man sollte vor dem zusammen bauen dringend drauf achten, dass auch Verbindungen die man nicht gelöst hat, wie z.b. Kabelverbindung zum unteren Lautsprecher, wirklich richtig sitzen, sonst darf man nach dem zu kleben feststellen dass der untere Lautsprecher nicht funktioniert 🤣😅😉😡😡😃😃

Tomek Einstein -

Teşekkür ederim faydalı bilgiler

chemical engineer -