iMac Intel 21.5" EMC 2805 Adhesive Strips Replacement

Written By: Walter Galan
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iMac Intel 21.5" EMC 2805 Adhesive Strips Replacement

Difficulty

Moderate

Steps

14

Time Required

No estimate

Introduction

Removing the display requires cutting through the adhesive around the perimeter of the screen. After the adhesive is cut, it cannot be used to re-seal the display in place, so you'll need to apply a new set of adhesive strips.

This guide has been updated! See this guide for the latest procedure.

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    • Before you start placing strips, you should remove all of the old adhesive around the perimeter of the rear enclosure.

    • Use a pair of tweezers to grasp and peel up each strip of adhesive—or if necessary, use a spudger to scrape up the adhesive, and peel with your fingers.

    • Repeat this process as necessary to remove all of the old adhesive from the rear enclosure, as well as the display.

    • For best results, after all the adhesive is removed, carefully clean the area under the adhesive with 90% (or greater) isopropyl alcohol and a lint-free cloth. Wipe in one direction, not back and forth.

    • This helps prep the surface so that the new adhesive bonds properly (and your display won't fall out).

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    • Start with the strip labeled 03, which goes on the right vertical side of the rear enclosure.

    • Before peeling off any backing, line it up against the frame of the iMac to get an idea of where it goes.

    • Peel the short piece of backing off the back of the strip.

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    • Insert the tip of a spudger into the hole at the top of the strip from the side that still has a backing on it.

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    • With the spudger still poking through the hole in the adhesive strip, push the spudger tip into the corresponding hole in the frame of the iMac.

    • Using the hole and spudger to anchor the position of the adhesive strip, line the strip up against the right edge, gently pulling up against the spudger to ensure the strip is taut, and stick it onto the frame.

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    • Once you've aligned the bottom half of the adhesive strip, peel the longer piece of backing out from behind the strip.

    • If the bottom half isn't aligned properly, you can carefully peel it up and re-stick it before peeling off the lower backing strip. Be sure to use the spudger tip to anchor the top.

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    • Align the upper half of the strip with the right edge of the rear enclosure, and stick it down.

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    • Use your finger to smooth the strip labeled 03 along the right edge. Make sure it is neatly aligned with the right side of the frame and that it sits flat.

    • Do not peel off the front adhesive backing yet.

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    • Work your way around the perimeter of the iMac, adding three more adhesive strips in the same manner.

    • Working counter-clockwise from strip 03, place:

    • Strip 02 on the top right

    • Strip 01 on the top left

    • Strip 05 on the left vertical

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    • In some kits, the 04 strip may be split into a 4R, to be placed on the right half of the display, and a 4L to be placed on the left half.

    • Remove the leftmost backing of the strip labeled 04 and align it with the bottom left edge of the rear enclosure, about a 1/4 inch away from the edge of the display glass.

    • Repeat the process for the longer, rightmost backing.

    • Smooth out the strip from the center to ensure a good seal with no bubbles or wrinkles.

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    • Peel up and remove the remaining backings from all of the strips around the frame.

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    • Lay the bottom edge of the display glass against the top of the lower bezel. Be sure to align the edges of the display with the edges of the rear case.

    • Do not fully lower the display; there are still two cables that must be attached. Once you've set the display down, you won't be able to lift it again without damaging the adhesive.

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    • Insert the display power cable into its socket on the logic board.

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    • While holding the display up with one hand, use a pair of tweezers or your other hand to gently insert the display data cable connector into its socket on the logic board.

    • Be sure to press it straight into the socket, and insert it completely.

    • Secure the metal retaining bracket on the display data cable downwards towards the logic board.

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    • Before sealing the screen in place, you may want to test powering on your iMac to ensure you reconnected everything correctly. Be careful not to touch anything inside while the machine is powered on.

    • While pressing the display against its ledge on the lower bezel, carefully lower it down towards the rear enclosure.

Author

Walter Galan

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