Saturday, April 09, 2016

HTC display replacement procedure – How to replace the dipaly of HTC Evo 4G – Mobiles and smartphoes repair and service

Category: Mobiles and Smartphones Repair and Service 

Contents of this article 

  • How to remove the case
  • How to remove the battrey
  • How to remove the dispaly 

HTC Evo 4G

DISASSEMBLING PROCEDURE 
Gently insert an iPod opening tool between the rear panel and the inner rear frame near the headphone jack. Use your iPod opening tool to pry up the rear case around the perimeter of the Evo.
Lift the rear panel off of the inner rear frame.
Using the tip of your finger, lift the battery from the end closest to the camera. Remove the battery from the rear inner frame.
Use the flat end of a spudger to pry up the red MicroSD retainer attached o the inner frame. The retainer will move about 1 mm and stop. Do not attempt to completely remove the MicroSD card retainer.
Use a pair of tweezers to carefully pull the MicroSD card out of its slot in the inner rear frame.
Remove six T5 Torx screws securing the rear inner frame to the inner case.
Gently insert an iPod opening tool between the rear inner frame and its plastic surround near the Micro HDMI port. Carefully pry the top edge of the rear inner frame away from the front surround of the Evo.
Insert the iPod opening tool between the rear inner frame and its plastic surround and pry up at several points along the left edge of the Evo.
Continue the prying procedure, now focusing on detaching the plastic surround from the bottom of the Evo. Pry up the rear inner frame along the right edge using the method described in previous steps. Eventually work around the entire perimeter of the rear inner frame until it is lifted slightly from the inner case.
Remove the rear inner frame from the rest of the Evo.
Remove the single Phillips screw securing the logic board to the inner case near the headphone jack.
Use the flat end of a spudger to pry the logic board off the posts securing it to the metal display tray. Do not try to completely remove the logic board just yet. It is still attached by three ribbon cables.
Carefully peel the device information sticker off the left edge of the logic board and EMI shield to reveal three connectors covered with tape. It is not necessary to peel the entire device information sticker off the EMI shield.
Fold the device information sticker up against the top of the logic board to keep it out of the way while you work. Remove the pieces of tape covering the following ribbon cables:
Front-facing camera
Front panel ribbon cable
Display ribbon cable
Using the tip of an iPod opening tool, flip up the front-facing camera ribbon cable retaining flap. Be very careful and gentle with these flaps. They are very easy to break or dislodge and equally difficult to reinstall. Use a pair of tweezers to pull the front-facing camera ribbon cable straight out of its socket.
Using the tip of an iPod opening tool, flip up the front panel ribbon cable retaining flap. Use a pair of tweezers to pull the front panel ribbon cable straight out of its socket.


Using the tip of an iPod opening tool, flip up the display ribbon cable retaining flap. Grasp the display ribbon cable with a pair of tweezers and pull it straight out of its socket.
Carefully lift the logic board out of the inner case, minding any cables that may get caught. Be mindful of the top power button and side rocker switch, which may fall out of the front case when the board is removed. Gently lift the front-facing camera out of its recess in the inner case and remove it from the Evo.
In the following steps, you will use a heat gun to soften the adhesive securing the outer black border around the underside of the front glass panel to the inner case.
With the heat gun set to low, start by heating the outer black border near the upper left corner of the glass panel. Try not to excessively heat the outer plastic edge of the Evo. Due to the heat applied, it is normal for a layer of condensation to develop on the inside of the glass panel and/or the outside of the LCD. It can be removed with glass cleaner once the glass is separated from the display.
Gently insert an iPod opening tool between the glass front panel and its plastic surround near the upper top left corner of the Evo. Carefully pry up the glass, being careful not to bend it excessively. The key is to work slowly and gently to avoid breaking internal components.
Use a heat gun to soften the adhesive along the left side of the front glass panel.
Insert the iPod opening tool between the front panel and its plastic surround and pry up a several points along the left edge of the Evo.
Continue the heating and prying procedure, now focusing on detaching the bottom of the front panel from the plastic surround. Pry along the bottom edge of the Evo to further separate the front panel from the rest of the device.
Use a heat gun to soften the adhesive along the right side of the front glass panel.
Pry up the front panel along the right edge using the method described in previous steps. Eventually work around the entire perimeter of the front panel until it is lifted slightly from the inner case. Don't try to completely remove the front panel just yet. Its ribbon cable is still attached to the inner case.
Peel the front panel ribbon cable off the adhesive securing it to the metal underside of the inner case.
Lift the front panel out of the inner case, minding the cable still routed through the bottom of the Evo. Carefully de-route the front panel ribbon cable through the slot in the inner case. Remove the front panel. Notice the four (4) clear plastic hooks that are adhered behind the menu buttons. Look closely. Each one is shaped differently and in a particular orientation. If the replacement front panel does not have these installed already, carefully remove and transfer them from the old panel to the replacement.
Peel the piece of tape connecting the underside of the LCD metal tray to the bottom of the inner case.
In the following steps, you will use a heat gun to soften the adhesive securing the underside of the LCD panel to the inner case. The area the adhesive is applied to is shown in red in the second picture (with the LCD removed). Use your heat gun to soften the adhesive under the LCD panel along its left edge.
To gain enough clearance to insert an iPod opening tool, it is necessary to simultaneously push the LCD panel outwards while prying along the edges. It is recommended to push through the opening located near the bottom left corner of the Evo. Insert an iPod opening tool with the edge angled up toward the underside of the display between the backlight and the metal shield beneath it.
Gently insert an iPod opening tool between the LCD panel and its plastic surround near the top left corner of the Evo. Use the iPod opening tool as a lever to pry the LCD panel away from its plastic surround.
Use your heat gun to soften the adhesive under the LCD panel along its right edge.
To gain enough clearance to insert an iPod opening tool along the bottom of the LCD panel, it is necessary to simultaneously push the LCD panel outwards while prying along the edges. It is recommended to push through the opening near the bottom right corner of the Evo. Insert an iPod opening tool between the LCD panel and its plastic surround and pry up at several points along the right edge of the Evo.
Lift the LCD panel assembly out of the inner case