HTC MyTouch 4G Digitizer Replacement

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Última actualización: November 4, 2021

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Introducción

Ir al paso 1

Here is a decent phone that belongs to a coworker. It got accidentally dropped and cracked the digitizer. The digitizer is widely available and not to difficult to change.

Qué necesitas

Partes

digitizer

Herramientas

Paso 1 Digitizer

HTC MyTouch 4G Digitizer Replacement, Digitizer: paso 1, imagen 1 de 3

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HTC MyTouch 4G Digitizer Replacement, Digitizer: paso 1, imagen 3 de 3

Here are the tools for this task. A couple of plastic opening tools and definitely a few guitar picks of different thickness will make the job easier.
Power down the phone. Remove the battery cover and the battery. Remove Sim card and SD card if installed.
Remove the two Torx 5 screws and the small Phillips screw to remove the bezel

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Paso 2

HTC MyTouch 4G Digitizer Replacement: paso 2, imagen 3 de 3

Torx 5 screw on the left and right side.
Small 3mm Phillips on the bottom center
Phillips screw is 3mm and 5mm for the Torx

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Paso 3

HTC MyTouch 4G Digitizer Replacement: paso 3, imagen 3 de 3

Use a plastic opening tool, or a guitar pick starting at the top of the phone
and working all the way around
and do not insert it around the buttons. Exert light downward force to loosen the clips that hold the frame on.

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Paso 4

HTC MyTouch 4G Digitizer Replacement: paso 4, imagen 3 de 3

The bezel should come off easy once the clips have been loosened.
There are four screws that hold the midframe to the phone.
They are T5x5mm, remove those. The bottom two screws also hold the WiFi antenna in place

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Paso 5

HTC MyTouch 4G Digitizer Replacement: paso 5, imagen 3 de 3

Remove the WiFi antenna by gently prying it up.
Place it out of the way.
There are three button ribbons in recessed areas along the frame. Two on the left,

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Paso 6

HTC MyTouch 4G Digitizer Replacement: paso 6, imagen 3 de 3

one on the right. They are simply adhered to the plastic frame.
Use an opening tool to gently remove them from the frame
by bending them into a downward direction.

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Paso 7

HTC MyTouch 4G Digitizer Replacement: paso 7, imagen 3 de 3

Make sure that they are out of the way of the frame.
Gently lift them off the frame with a opening tool.
Insert a small guitar pick between the midframe and the display.
Stay away from the contacts in the mid frame so as to not damage these.

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Paso 8

HTC MyTouch 4G Digitizer Replacement: paso 8, imagen 3 de 3

Move the opening tool (pick) all the way around the frame to release the internal clips.
The midframe will now simply come off.
Here is the logic board on top of the display assembly. It is held in place by two Phillips screws on the top and some plastic clips on the bottom

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Paso 9

HTC MyTouch 4G Digitizer Replacement: paso 9, imagen 3 de 3

Remove the right
and left screw.
Both screws are identical 2mm in size

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Paso 10

HTC MyTouch 4G Digitizer Replacement: paso 10, imagen 3 de 3

The power button is adhered to a landing at the top of the frame. Use a plastic opening tool to gently loosen it of the landing.
Use an opening tool to gently lift the logic board from the bottom until it clears the plastic clips.
Use an opening tool to release the clip on the side of the logic board.

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Paso 11

HTC MyTouch 4G Digitizer Replacement: paso 11, imagen 3 de 3

Remove the vibrate motor from its holder by simply pulling up on it. This will give access to the digitizer ribbon cable
Remove the digitizer ribbon cable from its snap-in connector
Remove the LCD ribbon cable from its snap-in connector

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Paso 12

HTC MyTouch 4G Digitizer Replacement: paso 12, imagen 3 de 3

Release the board from the clips. Start at the top
then the bottom
and the sides

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Paso 13

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Do not lift the logic board but flip it to the left.
It is still connected by the LCD ribbon cable.
Remove the black Kapton tape from the connectors locking flap

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Paso 14

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With the Kapton tape removed, the locking flap becomes accessible
Loosen the clamp connector by gently pulling it up.
Now you can separate the logic board from the LCD.

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Paso 15

HTC MyTouch 4G Digitizer Replacement: paso 15, imagen 3 de 3

Here is the back of the display assembly with the main part being the LCD.
Digitizer ribbon
LCD ribbon
the button bar ribbon cable
Now it is time to remove the digitizer. Turn the display assembly LCD side up
To soften the glue one can use a hairdryer on high, or a hotair gun on low. Continue to move the hot air source along the outside of the digitizer.

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Paso 16

HTC MyTouch 4G Digitizer Replacement: paso 16, imagen 3 de 3

Keep moving it so that the sides are about equally hot.
Use a plastic opening tool at the bottom of the digitizer and move it along the outside to the top.
Only move along the outside of the digitizer, do not insert the opening tool to deep since it could scratch the LCD.
The digitizer can not yet be removed since the ribbon cable is still attached to the assembly. It can not be pulled out since the opening is partially blocked by the LCD.

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Paso 17

HTC MyTouch 4G Digitizer Replacement: paso 17, imagen 3 de 3

The LCD prevents the connector from the digitizer cable to fit through the opening. It will be necessary to remove the LCD.
Turn the display assembly face down. Warm the back of the LCD with a hot air source until the adhesive softens.
Turn the assembly over and use an opening tool to remove the LCD from the frame.

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Paso 18

HTC MyTouch 4G Digitizer Replacement: paso 18, imagen 3 de 3

Remove the LCD from the frame.
guide the connector from the digitizer ribbon cable through the opening.
Digitizer is now removed and ready for replacement. Most digitizers come with replacement adhesive. It is important to clean the mating surfaces of any glass reside as well as dirt etc. Also, do not forget to remove the clear plastic that covers both sides of the new digitizer, before installation.

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Conclusión

To reassemble your device, follow these instructions in reverse order. Clean the mating surfaces before installing a new digitizer. Also, utilize double sided tape, to re-adhere the three button ribbons, and the power switch to the frame.

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