Hello to all my guys HD2 after some months of inactivity, yesterday I turned back and I found the surprise ugliest in the world, the touch does not go, can you tell me what can I do? to make it work again?
EDIT: if I hold the touch screen floor of 1 inch from the shell of the phone the touch and that it works beautifully.
EDIT 2: I tried it with the tester, and if I measure the frequency of current flowing from the motherboard to the screen with DCV 200 and 0.29 so it's not a motherboard problem (or rather, it seems to me that it is not)
check digitizer connections & lcd ribbon to mainboard & if all look ok & reseating them makes no difference to digitizer function then expect new digitizer is needed.
Not expensive & also very very common for digitizer fault on HD2 ...
Related
Hi
I have a Qtek 9000 and recently I broked the display. As I had the service manual I thought I coud replace the display by myself. I bought a new LCD + touch screen on ebay and the replacing of the LCD was easy and went quite well. The lcd works fine but the touch screen don't. I cheked and clean all the contacts but couldn't make the touch screen work.
So I wrote de seller and we agree to send back de display and receive a new one that he will test bofore posting.
I placed this new display and the problem remais the same. The lcd works fine but the touch screen don't, so I think the problem could not be here.
I made a hard reset and even downgraded to the original ROM but the touch screen still not working.
Can anyone help me with this
Thanks
Have you tried the touchscreen side of things before re-asembling the casing?
I have had problems with the seal on the casing around the screen activating the touch screen permanently - so that it runs really slow (if at all) when using the keypad.
damn, did you get the touch screen to work at all?
which LCD + touch did you buy from ebay? hopefully we can avoid this seller and get something that works.
ever thought of buying the touch screen separately and putting that on?
Let us know how it goes.
whitemoo.
after disasembling/asembling device had the same ussie with touch,after a cup of hours using it.
armandoramos try to open,when UNI works,only a part of UNI with LCD(look page 21 in service manual-bottom picture,page 22 & page 23-middle picture),then try how works your touch.If it works-you just had pinch the LCD coaxial cable module.
i had a problem with my touch screen, i was lucky enough to find a second hand uni in a local market with a busted lcd but working TS.
i swopped over the TS and re-assembled my uni, one thing i did have to add was a tiny piece of foam between the ribbon cable assembly and the case, this was to push the two ribbon cable sections (TS and LCD) together, for a better connection, relying on the sticky bits alone was not enough.
hope this helps.
Yesterdag I repaired a HD2 from a client.
His HD2 was one month before repaired by HTC because the motherboard was getting to hot and begun a rebootcycle. So HTC replaced the motherboard (i think)
One week ago, my client sat on the side of his HD2 and the LCD cracked (not the glass). No warranty anymore via HTC so he came to me.
So I was going to open the HD2 and I saw many faults during earlier repair (see the attachment).
I replaced the whole LCM, (i've done this repair for like a million times) and tested the LCM and it was working fine.
But when I placed the housing back, the backlight of the screen stops working after pressing to hard on the housing. I think some connections on the motherboard ain't working right. Maybe a short circuit?
Anybody knows what this problem can be?
Again, without the housing, the LCM module is working fine, no backlight problems.
Attachment (very important!):
See the bad report about earlier HTC repairment here:
http://www.touchfix.nl/reparaties/Reparatie HD2 HT033NW05788 27-02-2011.pdf
Nobody that has this problem before?
I'd say check for any loose connections 1st. If the housing itself is causing the backlight function to stop, it could be something more internal with the LCD/digitizer.
I'd say the digitizer must be replaced as a (whole unit together -LCD and digitizer together) as it looks to be damaged based on your point that the back-light does not work or stops functioning when pressure is applied.
By the way how did you repair those brass clips that were bent? Can one find replacements?
Look forward to your reply..
Good luck
xlr8me said:
I'd say check for any loose connections 1st. If the housing itself is causing the backlight function to stop, it could be something more internal with the LCD/digitizer.
I'd say the digitizer must be replaced as a (whole unit together -LCD and digitizer together) as it looks to be damaged based on your point that the back-light does not work or stops functioning when pressure is applied.
By the way how did you repair those brass clips that were bent? Can one find replacements?
Look forward to your reply..
Good luck
Click to expand...
Click to collapse
Yes I replaced the whole LCD and digitizer, its called the LCM (see my first post).
But a strange thing is, that if I press on the battery cover (with some pressure)
it will turn sometimes on..
Any ideas?
Hi guys..
I am new here kindly help me as this is my first msg in xda developer.
Ok let me start, I bought htc hd2 which had a touch problem only.. rest of the components are working fine. Now the issue is that i went to market for touch replacement but the shopkeeper said that this version of htc hd2 is very critical as the prints of touch pannel is not matching with other htc hd2 versions.. They replaced the whole pannel with lcd but it didn't work
Kindly tell me any help..
I am using tmobile version of htc hd2
Does not matter what version when replace with LCD as only difference is the solder & socket type connector used between lcd & digi.
All types will work on all models of HD2 when installed as LCD/digitizer set with no exceptions ...
I have done more than 30 HD2 digitizers & swapped LCDs & digitizers across model variants & had no issues.
If it not working they either had bad replacement parts or LCD ribbon connector on mainboard is damaged ...
Hi there,
First sorry for my bad english.
I have similar problem. Last weekend I replaced touch screen + digitizer. Everything went nice, everything works fine after assembly, but... sometimes digitizer did not respond. Usually it happens when I tried unlock the screen. Sometimes work immediately but sometimes I have several times press OFF button then tried to unlock. If screen not responding again OFF and ON. After several attempts it's works normal. Rarely happens during the normal operation, mainly when tried to unlock after wake up. What could be causing this? Faulty digitizer?
HD2 running original latest WM6.5 (firmware 3.14).
tss555 said:
Hi there,
First sorry for my bad english.
I have similar problem. Last weekend I replaced touch screen + digitizer. Everything went nice, everything works fine after assembly, but... sometimes digitizer did not respond. Usually it happens when I tried unlock the screen. Sometimes work immediately but sometimes I have several times press OFF button then tried to unlock. If screen not responding again OFF and ON. After several attempts it's works normal. Rarely happens during the normal operation, mainly when tried to unlock after wake up. What could be causing this? Faulty digitizer?
HD2 running original latest WM6.5 (firmware 3.14).
Click to expand...
Click to collapse
Could indeed be bad digitizer or perhaps bad button board or perhaps less than perfect connection on either digi to lcd or lcd to mainboard ...
Mister B said:
Could indeed be bad digitizer or perhaps bad button board or perhaps less than perfect connection on either digi to lcd or lcd to mainboard ...
Click to expand...
Click to collapse
Thanks for quick answer.
LCD & Digi I was bought is 60H00300 (socket one). Previous one (original factory) was soldered. I carefully disassembly and assembly and is 100% working except the digi sometimes not. But when I assembly everyting I do not apply double sided adhesive tape because simply I don't have at this moment (just yesterday I bought). Should I disassembly again, check connection lcd to digi and apply adhesive tape? It makes sense to do this? Is adhesive tape really that important?
tss555 said:
Thanks for quick answer.
LCD & Digi I was bought is 60H00300 (socket one). Previous one (original factory) was soldered. I carefully disassembly and assembly and is 100% working except the digi sometimes not. But when I assembly everyting I do not apply double sided adhesive tape because simply I don't have at this moment (just yesterday I bought). Should I disassembly again, check connection lcd to digi and apply adhesive tape? It makes sense to do this? Is adhesive tape really that important?
Click to expand...
Click to collapse
So what holding lcd/digi assembly in if no adhesive tape present ?
It is possible some movement from your non adhesive assembly is causing the flex cable to have improper movemnt/stress thus intermittent connection.
Personally I would by another button board ribbon as only $2USD & with that it allows easy testing of device while open & assembly laid side by side plus if button flex is suspect you will have replacement in hand.
I would suspect a bad connection or if unlucky you got a bit of a faulty new lcd/digi assembly
since yours is new phone, they should just replace the whole set, should be still under warranty.
jenelloeyo said:
since yours is new phone, they should just replace the whole set, should be still under warranty.
Click to expand...
Click to collapse
It's not under warranty. Phone is 2009 and I got it from my friend. Digitizer stop responding about two years ago and my friend rather than throw it through the window he gave it to me So I just replaced the screen & digi. Thats the story
htc lcd
Mister B said:
Does not matter what version when replace with LCD as only difference is the solder & socket type connector used between lcd & digi.
All types will work on all models of HD2 when installed as LCD/digitizer set with no exceptions ...
I have done more than 30 HD2 digitizers & swapped LCDs & digitizers across model variants & had no issues.
If it not working they either had bad replacement parts or LCD ribbon connector on mainboard is damaged ...
Click to expand...
Click to collapse
I heard that HTC T-mobile has larger dimensions than normal HTC, and i think the LCD will also be bigger. Is it true?
discavery3 said:
I heard that HTC T-mobile has larger dimensions than normal HTC, and i think the LCD will also be bigger. Is it true?
Click to expand...
Click to collapse
Digitizer & LCD is 100% same size on all models with no exceptions.
The T-Mobile HD2 US version is 1.5mm longer but that is in the polymer housing at bottom of device under keys & screens are 100% same as I have swapped them & personally own a US T-Mobile HD2 & EU standard HD2
This info & more can be found in HD2 Wiki ...
I have a T-Mobile HD2. A few months ago, the digitizer got a little crack but touch was working fine, so I order a new digitizer and replaced it. No matter what I did, the touch wouldn't work with the new digitizer (I know about front buttons putting pressure on digitizer ribbon cable which sometimes results in touch not working).
I thought problem might be the LCD connection slot for digitizer, so I order a new LCD too. But even with new LCD and new digitizer still touch doesn't respond! What am I doing wrong?
This problem is still baffling me. Right now, I have 2 sets of digitizers and LCDs (old ones and new ones I purchased) and no matter what combination of them I use, digitizer is not responding.
I have to say the old digitizer used to work fine before I opened up this phone, it was just it had a little chip/crack in the edge so I wanted to replace it just to make it nicer. But now digitizer won't work at all!
Is there supposed to be an insulating layer between digitizer and LCD? What wrong did I do by opening up this phone? I was very careful. The only thing I am not putting back for now is the front keys and its flex cable. Other than that, all what I took apart before, I have put back!
So I bought a HD2 with bad touch screen. The issue was the very common one that every one knows, red button that was poking into the touch screen flex cable. I opened up the phone and fixed the issue and touch screen was working perfectly fine. In the process, unfortunately, I chipped a little edge of the front glass/digitizer. It was not a big deal as phone was still working fine. But I decided to buy a new front glass.
When my new front glass arrived, I separated the digitizer/front glass from LCD, but then half of my LCD got corrupted. So I ended up buying an LCD too!!!
Now comes the issue: when I put the phone together, touch screen doesn't work at all. I have tried all combinations of NEW / OLD digitizer and NEW / OLD lcd. Nothing works. I wonder if anyone can help me figure out why?
P.S. When testing, I happened to connect the phone to my 5w wall charger directly connecting it to power pins (without battery installed). Would that be why I lost touch? Is the touch issue now because of motherboard that was directly connected to adapter, not getting power from its designated battery?
have you tried the old lcd with old digitizer (which was working)?
tried it before replacing?
did you made some change to the software before replacing?
I currently have this problem too while trying to revive my old- almost 3 years inactive- HD2 with new touchscreen, and still trying to figure out where is the problem
b3rvirus said:
have you tried the old lcd with old digitizer (which was working)?
tried it before replacing?
did you made some change to the software before replacing?
I currently have this problem too while trying to revive my old- almost 3 years inactive- HD2 with new touchscreen, and still trying to figure out where is the problem
Click to expand...
Click to collapse
Yes I had tried the old LCD, and that didn't work either.
I installed a WiFi Keyboard on it.
Did you resolve this issue?