Blu Grand M Motherboard Replacement Repair Guide

Difficulty

Moderate

Steps

Time Required

                          5 - 10 minutes

Sections

Battery
4 steps
Plastic Plate
2 steps
Motherboard
8 steps

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Introduction

What you need

Step 1

              Battery

Remove the two plastic plates with a plastic opening tool.

Remove the two plastic plates with a plastic opening tool.

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Step 2

Using a Phillips #000 screwdriver, remove the 3mm screws. Be sure to do this for the top and bottom of the phone.

Using a Phillips #000 screwdriver, remove the 3mm screws. Be sure to do this for the top and bottom of the phone.

Step 3

Remove SIM card tray with paperclip or SIM card tray removal tool.
Push down on the phone beside the camera and up on the backplate with your thumbs to remove the back plate. Remove adhesive if necessary.

Remove SIM card tray with paperclip or SIM card tray removal tool.

Push down on the phone beside the camera and up on the backplate with your thumbs to remove the back plate. Remove adhesive if necessary.

Step 4

There is a patch of adhesive underneath the battery, which can make it difficult to remove.
Place the plastic opening tool in the highlighted indent, and push up on the battery to remove it.

There is a patch of adhesive underneath the battery, which can make it difficult to remove.

Place the plastic opening tool in the highlighted indent, and push up on the battery to remove it.

Step 5

              Plastic Plate

Remove the yellow plastic tape using a pair of tweezers.

Remove the yellow plastic tape using a pair of tweezers.

Step 6

Use a Phillips #000 screwdriver to remove two black 4.0mm screws.
Use a Phillips #000 screwdriver to remove 2 silver 4.0mm screws
Remove the plastic cover along the top by tugging on it on the corner as shown.

Use a Phillips #000 screwdriver to remove two black 4.0mm screws.

Use a Phillips #000 screwdriver to remove 2 silver 4.0mm screws

Remove the plastic cover along the top by tugging on it on the corner as shown.

Step 7

              Motherboard

Place a spudger or other tool underneath the black wire.
Lift up on the gold coaxial cable connector so it disconnects from the motherboard.

Place a spudger or other tool underneath the black wire.

Lift up on the gold coaxial cable connector so it disconnects from the motherboard.

Step 8

Using the the narrow tip of a nylon spudger, open the two cable connector ports.

Using the the narrow tip of a nylon spudger, open the two cable connector ports.

Step 9

Insert the spudger underneath the ribbon cable.
Pull the ribbon cable away from the gray connector.
The cable should pull away free from the gray connector without any resistance.
If you encounter resistance, check to see that the black cable connector port is open.

Insert the spudger underneath the ribbon cable.

Pull the ribbon cable away from the gray connector.

The cable should pull away free from the gray connector without any resistance.

If you encounter resistance, check to see that the black cable connector port is open.

Step 10

Remove the four 4.0mm screws with a Philips #000 screwdriver.

Remove the four 4.0mm screws with a Philips #000 screwdriver.

Step 11

Lift the motherboard up and slightly away from the smartphone frame using the nylon tipped tweezers or other ESD safe tool.
The motherboard is still connected to the frame via a large black ribbon cable. Do not lift higher than this ribbon allows.
Flip the motherboard upside down to reveal the ribbon cable connector.

Lift the motherboard up and slightly away from the smartphone frame using the nylon tipped tweezers or other ESD safe tool.

The motherboard is still connected to the frame via a large black ribbon cable. Do not lift higher than this ribbon allows.

Flip the motherboard upside down to reveal the ribbon cable connector.

Step 12

A large black ribbon cable is connected to the underside of the motherboard.
Use the spudger to open the orange plastic ribbon connector.

A large black ribbon cable is connected to the underside of the motherboard.

Use the spudger to open the orange plastic ribbon connector.

Step 13

Insert the spudger into the folded ribbon cable loop.
Pull the ribbon cable away from the black plastic connector.
The ribbon cable should pull away from the black connector without any resistance.

Insert the spudger into the folded ribbon cable loop.

Pull the ribbon cable away from the black plastic connector.

The ribbon cable should pull away from the black connector without any resistance.

Step 14

Remove the motherboard with the nylon tweezers.
Place the motherboard on an electrostatic discharge (ESD) safe material.

Remove the motherboard with the nylon tweezers.

Place the motherboard on an electrostatic discharge (ESD) safe material.

To reassemble your, follow these instructions in reverse order.

Note: The ribbon clamp connector, also known as a Zero Insertion Force (ZIF) connector, might be difficult to reinsert. Follow the reinstallation step at the end of this guide: Recognizing & Disconnecting Cable Connectors.

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Author

                                      with 3 other contributors

                    Liam Rollins

Member since: 11/04/2019

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Team

                       Idaho State University, Team S1-G2, Watkins Fall 2019                        

                                                  Member of Idaho State University, Team S1-G2, Watkins Fall 2019 



                    ISU-WATKINS-F19S1G2                     


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Introduction#

What you need#

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Introduction

What you need

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