Based from the video guide on YouTube at: https://www.youtube.com/watch?v=JfatoeWbMRk
Steps with * on them mean they differ slightly from the teardown video above. Usually the difference will be noted.
This teardown details some things that are not apparent in the original teardown video because the original video uses a device that has no sticky areas on it. It is probably a demonstration model device - not a real world model.
My guide will help you to open the device, and remove all pieces except for the upper main board, and anything to do with the LCD. If you need to replace certain parts, watch the original video and use this guide. You may not need to completely tear your device apart to replace the part.
Notes
Some images may look slightly different to your phone. This is because I pull the phone apart, document the steps in text as I go and then take photos as I put it back together. So, for example, the main mylar where the battery sits may be off in earlier steps in my photo whereas the guide tells you to remove it near the end. Keep this in mind when looking at pictures.
Click on images for double size.
You will need
* T5 Torx screwdriver
* Precision plus head (Phillips) screwdriver
* Prying tool
* Tweezers
Instructions
1. Turn phone off, remove the lower cover and the battery cover. Remove the battery.
2. Remove the camera flash cover. (See video note: https://www.youtube.com/watch?v=YGsRtSEWpmE)
3. Remove 5 torx T5 screws holding the back cover in place. Two in the bottom cover area, two in the battery cover area, one in the camera flash cover area (This screw is longer than the other 4).
4. The volume button PCB is best lifted up before removing the phone cover. You may need to peel the IMEI sticker up to get the volume button PCB to lift upward. Use tweezers to lift it, and a prying tool if required to pry the cover outward a little.
5. Remove the back cover.
6. Remove the small metal cover sitting over the LCD plug, left side of the area covered by the lower cover.
7. Remove 3 torx T5 screws holding down the lower main board. Remove the plastic lower main board cover.
8. Carefully peel up the mylar (silver looking tape) near the LCD plug on the lower main board. It does not need to be completely detached from the device. There was no rubber in the phone I had. It was stuck to the back cover. The small rubber on the mylar remained stuck to it. * Unplug the LCD cable from the lower main board.
9. Remove the coaxial cable frame from the phone. It is located at the top of the lower main board.
10. Remove the rubber from the vibrator mechanism located on the left side of the device (thin red and black wires lead to it) and carefully lift the mechanism from its mount. You do not need to unplug the mechanism from the main board unless required.*
11. Lift the speaker from the upper main board. (The model I had did not have a microphone rubber, or a microphone, located in the place shown in the original teardown video) *
12. Carefully peel the mylar from the top left corner of the device. It can remain attached to the black cable. Unplug the black and white coxial cables and the flashlight cable (located in the top left corner) from the upper main board. You may not need to remove the reciever and it's cable from the upper main board depending on your circumstances. * Otherwise follow directions in original teardown video to do this. (Remove plug and lift out)
13. Remove the plus head screw from the upper main board, located below where the speaker sat and remove the plastic upper main board cover.
14. Carefully remove camera cover frame and then camera module. They lift upwards. No special tool is required. *
15. * The SIM FPC and its mylar does not need to be removed unless it is being replaced or the lower main board being replaced. It can be lifted out as one unit with the lower main board if desired. Else, remove SIM FPC mylar and the module as per original teardown video.
16. Remove the main black mylar from the middle of the device. (See video note: https://www.youtube.com/watch?v=a6LHhfIs2eA)
17. Remove the screws from the lower main board located just above the LCD socket, and just below the vibrator mechanism.
18. Carefully lift the lower main board from the device. (See video note in step 16 for small detail on this) The lower and upper main boards are connected by two plugs, located above the top of the lower main board. The lower main board can be unplugged from these and lifted out.
19. For further removal please refer to original teardown video as note at beginning of this guide.Assembly
Assembly is the reverse of this procedure, with these notes:1. When mounting the lower main board, ensure the two plugs on the ribbon from the upper main board are plugged in securely.
2. When remounting the back cover, ensure that the volume key PCB is lifted up so it can be slotted back into place once the back cover is remounted.Keywords
HTC Desire HD A9191 mobile cellular cell phone android disassemble disassembly tear down teardown guide step by step instructions with pictures photos images video notes hints tips remove removal main board parts camera cover gps
Hi. Does the Desire HD PCB have a plug for external 3g antenna (image03.jpg lower right)?
Thank you in advance.
Regards.
Hi Mike,
I am unsure if that is an external 3g antenna socket. I couldn't find reference to it online and I only read that you can't use an external antenna with this model phone. Sorry I am not much help for your question.
Regards,
Nathan.
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