[HD2 General] theabsurdman:
My HD2 finally developed the dreaded unresponsive touchscreen problem this week after just over 2 years use and as I'm now out-of-warranty I've decided to replace the lcd/digitizer myself.

Searching XDA and youTube for inspiration threw up a lot of scattered information, some useful and a lot more that was wrong and misleading so i'd like to establish a thread here with all the right answers provided, in detail.

This should also be of interest to those with dropped phones and smashed screens.

So far I've discovered:

- my unresponsive touchscreen is a hardware (not software) issue; caused by damage to the digitizer cable accumulated over time by repeated presses of the power button, to which it is physically adjacent.

- if the cable is only slightly damaged, a temporary fix might be achieved by pressing on the power button until the touchscreen starts responding again and then avoiding pressing the power button thereafter. ie. letting the phone timeout to sleep automatically and waking the phone up by pressing one of the other buttons rather than the power button.

- a permanent fix involves replacing the digitizer which requires an almost complete teardown of the phone. I'm open to any other suggestions from posters for say, repairing the cable although I haven't seen any as yet.

- although only the digitizer needs replacing, it's easier (albeit slightly more expensive) to replace the LCD and digitizer as a unit, which is the same part whatever version of HD2 you have.

- The disassembly procedure is fiddly with a lot of easily-breakable cables and connectors.

I've already acquired the LCD/ digitizer (part no. 60H00300-00P) from ebay, for £22.99 shipped, which was a pretty good deal as the standard UK price seems to be ~£38. The cheapest I found for the digitizer only (without LCD) in the UK was 11.95 shipped. The difference in price wasn't worth the extra installation hassle for me.

other required items are: a T5 torx screwdriver, a small jeweller's screwdriver set, tweezers, a guitar pick, an old credit card or similar, superglue (or double-sided adhesive tape) and thin (2.5mm?) single-side adhesive tape. also reading glasses or a magnifier might be handy depending on the quality of your close vision (i'm 54 so mine lacks somewhat).

This is by far the best instructional video I have found to date:

http://mperlitsch.hintergrundbild.com/htc_hd2.htm#Zerlegeanleitung

.. unfortunately its in German, which mostly isn't a problem as you can see what he is doing, except at the end as he describes (at length, rather than showing) the final step of superglueing the new LCD/ digitizer into the phone chassis, where i thought I might have missed some important details. Perhaps any German-speaking posters could fill us in on that procedure?

The above website also accompanies the video with some text descriptions of the various stages of disassembly which I will get google- translated into English.

There is another useful-looking instructional site here (hi-res pics, no video):

http://www.ifixit.com/Guide/Installing+HTC+HD2+PB81120+Screen/5651/1

Finally there are also some leaked official HTC breakdown videos on youTube @720p here:

disassembly:

http://www.youtube.com/watch?v=cL-jnUKufC4&feature=player_embedded

reassembly:

http://www.youtube.com/watch?v=t8Q7mXdcJ54&feature=player_embedded

I'll keep the thread updated as I go and I would welcome any help or tips from anybody that has already been down this road.

My aim is to develop a foolproof instructional guide that almost anybody can follow to extend the life of this great phone.