HTC HD2 dropped, Black Screen, but touch and whole phone works well - HD2 General

Hi
I've dropped my HD2. Everything is working, including touch screen, I can unlock the phone, I can answer the call, but screen is black, not broken.
What should I do? Does the lcd screen replacement will be sufficient? In that case, could the screen be ok, but some other display "processor" could be dead? I'm asking because I'll try to this on my own.

Could simply be the lcd cable has slipped slightly but probably more likely an LCD replacement needed.
You need remove rear housing & have a look & make a decision from your findings/testing.

hello
I've got a little update - lcd screen is working well - I mean it displays the image, the only malfunction is backlit. Right now when i use flashlign I can actually see whats on screen. Do you have experience or think that backlit connection can be repaired? Do You have any schematics for hd2' lcd ?

I suspect new LCD required by sounds of it. LCD can not be stripped for repair so after basic inspection of external connection replacement is only solution & not expensive due to falling cost of HD2 parts.

Related

Difference between the lcd and digitizer????

I have sadly broke my screen but it looks fine, it's just the touch not working. Im new at this and I have no clue what the difference is between the lcd and the digitizer. I need to know what to replace on this. please help.
screen and digitizer
the screen is the actual lcd display while the digitizer "touch" part of tthe screen. now i havent replaced the screen on my wing yet but most units the screen and digitzar are one complete unit sometimes the digitizer can be seperated with a razor blade (not recomended) personaly i would replace the entire unit (lcd and digitizer)

Advice after touch screen no more work

Hi,
The touch screen of my HTC elf doesn't work anymore.
I am going to order some parts to change the digitizer myself and also the casing to make it look a little newer.
Anyway, I'd like to understand how the touch functionality works exactly. Is it a pressure on the digitizer itself that make a "touch" or is it a pressure on the digitizer that press the screen and this action make a "touch" ?
When I power my disassemble Elf, a pressure on the screen itself doesn't do anything....
I'd like to know if I need to order a screen as well
Hi,
just replaced my own elf's digitizer a month ago... and the phone is like new.
To answer your question it's the digitizer that reads pressure and sends the data to the system (if you already disassembled it you should have noticed a flat cable that connects the digitizer to the board).
So if the screen on your elf is working you should solve the problem by replacing only the digitizer.
You rock, I order now

Bought a broken Touch Dual, what can I do? (Display backlight)

Hello everybody!
I saw an auction with a Toch dual, "broken display". I thought to buy it, and switch the LCD with a new one. I paid the touch just 30$ (20 Euros).
But the situation was a bit different: the device is fall into the water (i see the pink marks on the device and the battery), the display was actually ok but has problem with the backlight.
The backlit was veeeery soft, didn't react if i tried to set it manually on higher levels, and was a bit stronger if i open the slide of the cell phone.
I thought, it could be a problem of humidity, and if i dismounted and dried the electronics, it would disappear, as it was with my xperia x1: felt into the water, some humidity inside was causing the backlight to flash and disappear, once dried everything got normally.
So I tried, but actually the situation now is even worse: the digitizer does not respond at all, and no changes in the light.
So my question is: can i just buy on ebay a new LCD + digitizer, and solve all the problems? I already changed a LCD without digitizer on a cell phone, and it worked. I don't know, how hard and risky can be to change also the digitizer, and also i cannot imagine how to fix the backlight problem, just suppose that with the new LCD it will work - it is integrated, isn't it?
Many many thanks for your help!!!

LCD & digitizer problem

This is my first post here and though i read similar posts on this subject i would
like to read your opinions on this one.
I accidentally dropped some water on my touch hd and my display got damaged.The phone worked fine and so did the digitizer but the problem was that the backlight of the display was dead.At some point the backlight turned on but when i tried to input the unlock code it turned off right away (did this several times).I knew that i should replace the lcd (and the digitizer just in case).
I bought the lcd and the digitizer seperately and i managed to assemble the phone back using the service manual.Since then when i turn the phone on I hear the starting sound,i get the vibration then after a while the screen with no backlight again displays the "tap here to configure your phone" screen (after the hard reset),when i tap i get no response.
I checked the connections many times and i also used a second digitizer with no success.
Is there a possibility flashing a new ROM will solve the problem?
If so is there a way of flashing a ROM when the phone's screen is not usable?
Waiting for your precious opinions/suggestions/knowledge
Thanks in advance.
Hello,
Flashing the ROM won't solve an obviously hardware problem.
If you changed the LCD and still have no backlight, then either you bought a defective screen, or the problem is elsewhere, maybe on the main electronic board... Which would be bad news.
BTW, I wanted to change the digitizer in the apst years, but its not provided with the glue, so I had to buy a whole assembled screen + digitizer.
How did you manage to glue the digitizer on the screen ?
I aligned the screen with the digitizer and then i used small pieces of a special thin and trasparent tape to hold it in place.The tape holds the screen tight and it is barely visible, it also has the advantage that you can seperate the lcd and digitizer anytime you want with ease (though you have to be very delicate when applying it to get a good result)
I asked for a replacement of the defective lcd and i hope i will get a new one.

Need Help-Backlight only after new LCD Screen on G530

I have a G530, the Tmobile version, though fully unlocked, rooted, etc. I had cracked the digitizer and while waiting for a new one I dropped it again and the LCD popped out with the digitizer, disconnecting itself and would come back on after that. I got a new LCD and attached it to the board (disassembled) and all worked. I mounted the board back in the case and reattached everything but then only the backlight would turn on during initial boot. The connection seemed loose and after 2-3 reconnects I got my display to work, but while attaching the digitzer, the glass at the very top, just before the lcd starts broke... So I got ANOTHER lcd and digitizer (They're cheap) This LCD only gives the backlight at initial power on, with no display response, but no matter what I do, I can't get it to kick on like the last one.
I'm trying to get an idea if it is the new LCD, or if my connector on the board is broken, It looks like maybe a bit of plastic at the top broke off.. and is making the connector a bit loose. Since I get a backlight, anyone have any experience as to which is more likely broken? I'm not sure if power from the connector goes straight to the backlight, or if it goes to the LCD first, and if I would get a backlight with a bad LCD. These are cheap $25 LCD & Digitizer bundles from Amazon, like 'Mencia' brand so good chance I could have gotten a new one that is dead.
I'll try to get another up close shot of the connector, this magnifying app didn't focus in as well and you cant see the individual connectors as well, but they are fine, its the very top part of the connector looks a bit smaller. The bottom part has a piece of metal sandwiched between the plastic, but the top doesn't have a bit of plastic after the metal tab, of course, it could be absolutely nothing :s

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