Introduction

Restore life to your HTC Evo 4G by replacing the motherboard.

Image 1/1: Use your iPod opening tool to pry up the rear case around the perimeter of the Evo.
  • 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.

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Image 1/1:
  • Lift the rear panel off of the inner rear frame.

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Image 1/2: Remove the battery from the rear inner frame. Image 2/2: Remove the battery from the rear inner 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.

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Image 1/1: The retainer will move about 1 mm and stop. Do not attempt to completely remove the MicroSD card retainer.
  • Use the flat end of a spudger to pry up the red MicroSD retainer attached to the inner frame.

  • The retainer will move about 1 mm and stop. Do not attempt to completely remove the MicroSD card retainer.

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Image 1/1:
  • Use a pair of tweezers to carefully pull the MicroSD card out of its slot in the inner rear frame.

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Image 1/1:
  • Remove six T5 Torx screws securing the rear inner frame to the inner case.

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Image 1/1: Carefully pry the top edge of the rear inner frame away from the front surround of the Evo.
  • 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.

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Image 1/2: Image 2/2:
  • 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.

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Image 1/3: Pry up the rear inner frame along the right edge using the method described in previous steps. Image 2/3: Eventually work around the entire perimeter of the rear inner frame until it is lifted slightly from the inner case. Image 3/3: Eventually work around the entire perimeter of the rear inner frame until it is lifted slightly from the inner case.
  • 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.

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Image 1/1:
  • Remove the rear inner frame from the rest of the Evo.

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Image 1/1:
  • Remove the single Phillips screw securing the motherboard to the inner case near the headphone jack.

Philips 000 Screw

mike - Reply

Image 1/1: Do not try to completely remove the motherboard just yet. It is still attached by three ribbon cables.
  • Use the flat end of a spudger to pry the motherboard off the posts securing it to the metal display tray.

  • Do not try to completely remove the motherboard just yet. It is still attached by three ribbon cables.

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Image 1/1: It is not necessary to peel the entire device information sticker off the EMI shield.
  • Carefully peel the device information sticker off the left edge of the motherboard 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.

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Image 1/1: Remove the pieces of tape covering the following ribbon cables:
  • Fold the device information sticker up against the top of the motherboard 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

I'm not sure why the dimensions I added to the display cable width were not approved for Step 14 (9/32" vs. 17/32"). Maybe I entered it in the wrong section? The reason I added it was because you cannot see the part number on the ribbon without removing the LCD, and I did not want to completely disassemble the phone at that time, rendering it completely inoperable before the part arrived.

I continually ran across "advise" from customers on Amazon (and elsewhere on the interwebs) stating "make sure you buy the LCD with the right width cable". This information, while well meaning, is utterly useless, since none of the advice I came across had the actual dimensions. It should be included somewhere in the teardown manual.

After some searching, I found the dimensions on the LCD product descriptions at www.repairsuniverse.com. I measured my own LCD ribbon, and can verify the 'wide' dimension is accurate:

http://www.repairsuniverse.com/htc-evo-4...

http://www.repairsuniverse.com/htc-evo-4...

martymcgrail - Reply

Image 1/2: Be very careful and gentle with these flaps. They are very easy to break or dislodge and equally difficult to reinstall. Image 2/2: 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-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.

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Image 1/2: Use a pair of tweezers to pull the front panel ribbon cable straight out of its socket. Image 2/2: 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 front panel ribbon cable retaining flap.

  • Use a pair of tweezers to pull the front panel ribbon cable straight out of its socket.

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Image 1/2: Grasp the display ribbon cable with a pair of tweezers and pull it straight out of its socket. Image 2/2: Grasp the display ribbon cable with a pair of tweezers and pull it 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.

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Image 1/1: Be mindful of the top power button and side rocker switch, which may fall out of the front case when the board is removed.
  • Carefully lift the motherboard 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.

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Conclusion

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

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One Comment

My we girl dropped her HTC fine their is lines going down the screen does anyone no if the fine can be fixed

michelledoc2010 - Reply

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