Imac G5 20 Model A1145 Display Replacement Repair Guide

Difficulty

Moderate

Steps

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Sections

Access Door
2 steps
Front Bezel
7 steps
Lower EMI Shield
2 steps
Display
7 steps

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BackiMac G5 20" Model A1145
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Introduction

What you need

Step 1

              Access Door

Orient the iMac face-side down on a table with the bottom edge facing yourself.
Remove the two Phillips screws securing the access door to the bottom grille of your iMac.
The screws are captive in the access door.
Before beginning the repair, unplug the computer and press and hold the power switch for 20-30 seconds, to discharge internal capacitors.

Orient the iMac face-side down on a table with the bottom edge facing yourself.

Remove the two Phillips screws securing the access door to the bottom grille of your iMac.

The screws are captive in the access door.

Before beginning the repair, unplug the computer and press and hold the power switch for 20-30 seconds, to discharge internal capacitors.

1024

Step 2

Remove the access door.

Remove the access door.

Step 3

              Front Bezel

Remove the three T8 Torx screws securing the front bezel to the rear case along the lower edge of the iMac.

Remove the three T8 Torx screws securing the front bezel to the rear case along the lower edge of the iMac.

Step 4

Turn the computer over.
Use your thumbs to press both RAM arms in past the front bezel for enough clearance to lift it off the rear case.

Turn the computer over.

Use your thumbs to press both RAM arms in past the front bezel for enough clearance to lift it off the rear case.

Step 5

While holding the RAM arms in with your thumbs, lift the lower edge of the front bezel enough to clear the rear case.

While holding the RAM arms in with your thumbs, lift the lower edge of the front bezel enough to clear the rear case.

Step 6

Re-orient your iMac so it sits upright on the stand.
Insert a plastic card up into the corner of the air vent slot near the top of the rear case.
Push the card toward the top of the iMac to release the front bezel latch.
Pull the front bezel away from the rear case.
Repeat this process for the other side of the front bezel.
It may be necessary to apply several layers of duct tape to the top of the access card to aid in releasing the latches.
If the bezel refuses to release, try pressing the lower edge back onto the rear case and repeat this opening process.
Alternatively, you can use a strong magnet by holding it to the front top left/right corner of the display. You will hear a snapping sound when the hatch is released.

Re-orient your iMac so it sits upright on the stand.

Insert a plastic card up into the corner of the air vent slot near the top of the rear case.

Push the card toward the top of the iMac to release the front bezel latch.

Pull the front bezel away from the rear case.

Repeat this process for the other side of the front bezel.

It may be necessary to apply several layers of duct tape to the top of the access card to aid in releasing the latches.

If the bezel refuses to release, try pressing the lower edge back onto the rear case and repeat this opening process.

Alternatively, you can use a strong magnet by holding it to the front top left/right corner of the display. You will hear a snapping sound when the hatch is released.

Step 7

Lay your iMac stand-side down on a table.
Lift the front bezel from its lower edge and rotate it away from the rest of your iMac, minding the RAM arms that may get caught.
Lay the front bezel above the rest of the iMac.

Lay your iMac stand-side down on a table.

Lift the front bezel from its lower edge and rotate it away from the rest of your iMac, minding the RAM arms that may get caught.

Lay the front bezel above the rest of the iMac.

Step 8

If necessary, remove the piece of kapton tape wrapped around the microphone and camera connectors.

If necessary, remove the piece of kapton tape wrapped around the microphone and camera connectors.

Step 9

Disconnect both the camera and microphone cables.

Disconnect both the camera and microphone cables.

Step 10

              Lower EMI Shield

Peel the lower EMI shield off the lower edge of the iMac and off the two vertical 4" sections on either side of the iMac.
It is not necessary to peel the lower EMI shield off the display.

Peel the lower EMI shield off the lower edge of the iMac and off the two vertical 4" sections on either side of the iMac.

It is not necessary to peel the lower EMI shield off the display.

Step 11

Tape the lower EMI shield up against the face of the display to keep it out of the way while you work.

Tape the lower EMI shield up against the face of the display to keep it out of the way while you work.

Step 12

              Display

Remove the two T6 Torx screws securing the display data cable connector to the logic board.

Remove the two T6 Torx screws securing the display data cable connector to the logic board.

Step 13

To disconnect the display data cable, grab its connector’s black tab and pull it away from the face of the logic board.

To disconnect the display data cable, grab its connector’s black tab and pull it away from the face of the logic board.

Step 14

Peel back the two EMI tape strips from the left and right edges of the display.
During reassembly, it is helpful to use several small strips of tape to hold the EMI shielding along the left and right edges of the display footprint out of the way before lowering the display into the rear case of your iMac.

Peel back the two EMI tape strips from the left and right edges of the display.

During reassembly, it is helpful to use several small strips of tape to hold the EMI shielding along the left and right edges of the display footprint out of the way before lowering the display into the rear case of your iMac.

Step 15

Remove the four recessed T10 Torx screws securing the display to the rear case.
Bit drivers tend to be too short to reach these screws. Be sure to have a magnetic thin-shafted T10 Torx screwdriver on hand.

Remove the four recessed T10 Torx screws securing the display to the rear case.

Bit drivers tend to be too short to reach these screws. Be sure to have a magnetic thin-shafted T10 Torx screwdriver on hand.

Step 16

Lift the lower edge of the display slightly out of the rear case.
Disconnect both inverter cables (shown in red) by pulling their connectors toward the bottom edge of your iMac.

Lift the lower edge of the display slightly out of the rear case.

Disconnect both inverter cables (shown in red) by pulling their connectors toward the bottom edge of your iMac.

Step 17

Lift the display until it is nearly perpendicular to the rear case.
Disconnect the remaining two inverter cables (shown in red) by pulling their connectors toward the top edge of your iMac.

Lift the display until it is nearly perpendicular to the rear case.

Disconnect the remaining two inverter cables (shown in red) by pulling their connectors toward the top edge of your iMac.

Step 18

While holding the display perpendicular to the rear case, pull it upward to peel off the EMI shield stuck to its upper edge.

While holding the display perpendicular to the rear case, pull it upward to peel off the EMI shield stuck to its upper edge.

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

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Introduction#

What you need#

Introduction

What you need