Database Users

Help with touch screen replacement!!!

I wanted to change the touch screen on my QTEK 2020 and I bought a new one a few days ago. I opened tha PDA, but when I tried to pull the touch screen off, I damaged a slim orange cable on the back of the screen. Specifically, I pulled a black sticker and it took along the two cables that were on the circuit on the screen. I don't care for the touch screen's cable, but for the one of the screen. I have scratched the insulation on the cable and I have a question. If I just put over the circuit the nakes cable and glue it a little belower, would it make connection? Or have I to solder it? And How am I going to soldier a cable like this that's naked from the side that I don't see when I put it in place, without even melting and damaging for good the screen or the cable itself? I have some pics, too for you to see and understand what's going on. Please help me, as I am a young man with prospect and I want to learn things like this and do stuff more than the usual.

OK, I couldn't wait for advice so I soldered both cables. The screen turns on and it needs to be aligned. I tap the screen, the touch screen works, but when I finish the alignment, it starts from the beginning, the cross in the center. It asks to be aligned constantly. I haven't assembled the PDA, I have it like the pictre below. Is this the problem it doesn't start, or do I have to put the touch screen somehow differently? I have it centered and tried to align tapping a little upper, lower, left, and right from the cross, but nothing.
Please HELP!!!

OK, no worries! I fixed it! It took me all evening, but I'm completely satisfied. Solder this, solder that, make a bridge because a connection was damaged with all the scratching, but it worked!

cong. dominator happy that you have finally fixed it :wink:

Thanks Kbantikos my boy! And here's the bench and the heat tool I used! That's the only that I have. No doubt it took me 4 and a half hours to complete.

Congratulations! I'm not kidding, saw a lot of "homework" results, in some cases, display was damaged beyond repair.
You get the working display, so you are lucky .

Thank you, my friend! I didn't believe my eyes when it booted! It still works fine, even if it fell off my hands one time!

my touch screen is really quite dull / lacks brightness even when on the high setting
i've aquired an XDAII that isn't working but i know its screen was bright when it was working
my question is: what do i need to be looking out for / be carefull of when i replace the screen
what would you do differently?
thanks
Larry

You'll definitely have to look for that orange cable that's not of the touch screen. on the back side of the screen there should be a black sticker. When you try to pull it over, it takes the cables, too. So pull it from the side of the touch screen's cable only. You are gonna need to solder the new touch screen for sure, just placing it won't work. Scratch the side of the cable that's going to be placed on the circuit on the back of the screen so that the metal contact on both (touch screen's cable, circuit) is naked. Put solder on the circuit's contacts. Then put the cable on top of the circuit, but a little lower. Now, burn the solder holding the cable steady and connect that way all four contacts. I hope I was of a little help, observe my pictures and good luck!

Just about to try this myself.
Touch screen bought from - http://stores.ebay.de/hitechhk. Arrived within 1 week.
Removing the black tape on the back of the screen, even very carefully, pulled off both the connections for the touch screen and another connector (the back light I think)
In hindsight would recommend only removing the tape around the touch screen connector.
As soon as I find a small enough tip, will resolder everything.

Detominator7, how did you change your digitizer? cause i need to replace mine too, but the seller is talking about soldering it. i already open my pda and all i can see is there is only plastic cable. how do you solder on plastic?

Your touch screen might have a cable that plugs into a hole and does not require soldering. You know, like the fans we use on PC.

Dominator7 said:
Your touch screen might have a cable that plugs into a hole and does not require soldering. You know, like the fans we use on PC.
Click to expand...
Click to collapse
no, i already checked (disassambly my pda) i got the ribbon cable that attached to another ribbon cable at the back of lcd.

hi dominator touch screen 2020i
please dominator, could you send me or post a clear procedure about touch screen sostitution?
have I to cut some cable...?
sorry but i'm italian and i don't understand so well english!!
thanks a lot!!!

Dominator7 said:
Thanks Kbantikos my boy! And here's the bench and the heat tool I used! That's the only that I have. No doubt it took me 4 and a half hours to complete.
Click to expand...
Click to collapse
good job! I have the same problem and so i got a new touch screen but i cannot get over the calibration thing same as your problem before can you give me some tips as to what to do im just about to give up and get a new lcd.Only thing stopping me is the price of a new lcd.

What kinda adhesive do they use on the back of the screen
I'm talking about the clear glue type adhesive on the back of the screen in order to hold the ribbon in place
here's a pic of what I'm talking abouthttp://blog-imgs-3.fc2.com/i/n/u/inuchanbt/CHT9000_dismantle12.jpg
The gold/copper ribbon glued to the screen
had to replace my brothers screen about 3 times and now its barely stickin

it's a kinda like double tape. u can find in office stores

I hard reseted my O2 XDA II & I had surprised the screen aligning can't be passed.
Can somebody help me with ROM Flash or maybe some hardware tricky?
I use WM5 from C_Shekar.
PM me if anyone replies this message.
Thanks, Berns.

Fade Out; WSOD; White screen coloured lines

I know there are others dying to fix this problem. Apparently there is a back "connector" that gets loose. If someone has fixed this please show me which one it is and how you fixed it.

It is the connecter between your mobo and the screen itself. Its come partially lose on one side. You need to dis-assemble your device, then remove and re-insert the little flex cable back into the slot, and all should be well!

hey thanx heaps man. i have it apart and didnt want to put it back together til i knew what the cause was.Wicked!

also the flex/ribbon cable is very sensitive. i will dremel the part of the case that touches the side of the ribbon cable. i am also thinking about coating it with something to make it last longer. replacements cost 40 euros

All good ideas! tell me what u decide to coat it with. i put it back together and made sure that connection was in right but it didnt work, (WSOD 5mins after assembly), going to try putting something underneath to keep it tight when its all fixed together. thanks again for your help guys.

I have the same issue, but also my touchscreen is affected to, touchscreen wont work when you slide keyboard open, sometimes i have to open very slightly for touchscreen to work.
The ribbon cables are very delicate, and it is known that slide open phones are bad for these ribbon cables, if cleaning and securely connecting them and the problem persists, its probably a damaged ribbon cable.
My phone does the same screen problem, where it sometimes gets lines down one side of the screen and gradually fades out, putting the phone into standby and back on brings the screen back to normal but it sometimes repeats several times.
I have noticed that it very rarely does it when the keyboard is exposed, it does it most frequently with the phone closed. And its more likely to do it when there is alot of white background, like in certain option screens, for example when in camera options does it alot.
In my case i suspect that the screen itself is faulty (hardware) and the touch screen cable has been damaged, since sliding out the keypad affects on weather it works, doesnt work, or works as if not calibrated.
emjay87, sorry to say it but i suspect your display is faulty or the ribbon is damaged. Replacement is easy to fix, but make sure you get the right screen, as far as i remember there are 2 different screens for this phone. They have different ribbion cable connections. One gold and ones white i think.

How difficult is to take apart an HTC Ozone?

Hi all,
My wife spilled a glass of beer on my PDA, and now the top front buttons don't react like before. Sometimes you don't hear the 'click' and you can feel like they got stuck.
The keyboard looks fine, so the problem is only the with the top buttons at the front of the PDA.
Have anybody tried to take apart this PDA? Would be easy to open it and clean everything before putting everything back?
Thanks a lot

I completely soaked my Ozone about a week after I got it... knocked it in the sink. I like to think that I was among the first to void my warranty, Lo..l?
The phone is really well constructed for what you need to do. All of the critical electronics are very well shielded on the board, nothing difficult about separating the board from the case.
Six 'star drive' screws on the case (that's where the warranty sticker is), one tiny phillips on the board - board pulls up off of pins, away from the usb connector and Bob's your uncle. The keypad is not fastened to the case, pull it right out.
Watch the ribbon cable for the lcd - I would not recommend disconnecting it. there should be enough play to allow you to work. Make sure you're working in a really clean environment, and check the inside of the plastic lcd cover obsessively right before reassembly. If you're anything like me that one little catpet fiber or cat hair or whatever the hell will drive you to take the phone apart again 4 days later...
Sorry about the ramble... it's late. Short answer is: Nothing to it.
Good luck!

Thanks a lot for your post. It was really helpful.
I will probably try it this weekend.
I'll post here the results
Cheers

So if I wanted to buy a different color keypad (dont like the green) it shouldnt be hard to take apart??...I change screens in Env/Voyagers a bit so have a little knowledge...

Disassembly of Legend (advises & some help required)

Hi there,
I broke my touch screen and tried to replace it by myself.
To make a long story short, I failed miserably (I broke the screen under).
However, I learned a few things I didn't met in the forum.
A- Disassembly of the case.
1- The Legend is glued. So, you have first to use hoven to melt the glue before being able to do anything useful.
15min/ 60 degree in the oven. Or use an hair dryer (I used the former).
2- Don't forget to remove ALL the screws (even the one behind the IMEI notice).
3- Don't try to open the camera lid before loosening the glue or you'll damage the aluminium body.
4- You have to unplug all the différent cables, so take notes to remember where all of them goes.
5- You must disassemble all the boards. There are 2 boards. One supporting the sim / SD connector, and one supporting the screen/touchscreen.
6- When disassembling the screen board, remove it by pulling the touchscreen at the bottom, and lift it up. don't pass a tool on the sides to remove it or worse, under the touchscreen, you'r tool will touch the screen under and break it (like I did). The screen is very, very fragile
Now, I'm stuck here because I can't remove the connector of the legent which is passed under the shield on the back of the screen.
I'm not able to remove the screen so I would like to know how to remove this shielding or get back the touchscreen connector to be able to replace it.
Once I figure out how to remove this shiled, I may be able to remove the screen too.
But now, I'm clueless (it was 2 in the morning when I gave up).
Maybe, some of you knew the trick to open this phone further.
I'd like to hear about it.

A little up to my post for the ones who did not read it till the end:
I can't remove the connector of the legend which is goind under the shield on the back of the screen.
I would like to know how to remove this shielding or get back the touchscreen connector to be able to replace it.
Once I figure out how to remove this shield, I may be able to remove the screen too.
But now, I'm clueless (it was 2 in the morning when I gave up).

mate it sounds like you have trashed your phone.they are built NOT to be taken apart.They require special tools and process to be repaired. The only thing i would suggest is contacting your insurance company and let them know that your phone was crushed under a car or something and then crush it under the car and you can get it replaced. If you dont have insurance, take some out and make a claim in say a month or two.
Its not an honest thing to do but your phone sounds busted and its the cheapest way of replacing that handset.
Post a pic of it if you can

Unfortunately, I have no rights to post a link or some put some pics.
Something about spam and profile that should be reviewed before being able show any pics.
This device is glued. No specialized tools are able to open it without removing it.

That would mean that the phone cannot be repaired, only replaced. My phone's motherboard was replaced, so at the service stations they should have special tools.

Fixed it!
Bottom right hand corner:
Bend the shielding back just enough to allow you to slip the connector in & then use a little glue to stick it back.
Maybe I was lucky, but my phones working as good as new again

I fixed my Legend
Guys, I know it's been a while since you talked but in case someone else is looking for this info, that's what happened to me:
I cracked the display of my legend and purchased a new one on eBay (roughly 40 pounds) - obviously delivered from Hong Kong but a genuine Samsung (in case you didn't know the Legen's screen as well as most of the AMOLED screens are Samsung's).
Then I used the above information plus some YouTube videos to give myself an idea as to what should I do. The result follows:
I used a hair dryer to heat up the back of the phone (camera and loudspeaker cover). Perhaps I should have been more patient as in the end I decided to use a knife with a very thin blade to lift it and I scratched the plastic and the aluminium body a bit. Anyways - the back clicks in but is glued in addition to that so you have to use both the heat and gently applied force.
Once you remove the back cover (which took me the longest out of everything) you should start removing screws. There's two behind the back cover and six behind the bottom cover (where the battery is). At this stage you don't have to remove all the screws - the bottom two, the one behind the IMEI and the one under the VOID sticker hold the main board but the two screws sitting deeper inside the phone's body hold the front buttons so you may leave them for now.
Now comes the trickiest part so read carefully: the main board is held inside the unibody by the screws (which we already removed), but is also glued right below the camera lens and along the sides. You should probably heat it up as much as you can and for a long time. I decided to do it the hard way. My dislplay was already cracked and it's the most delicate part of the phone so I said "whatever" and used the same knife as before - moved it alongside the screen (pushed it in gently from the front) until there was no resistance (the glue let go). Then I pushed and I heated the thing up and pushed and tried from every angle until finally the board slid out of the unibody. I hope you'll find it easier then I did as it seems that everyone describing it found it quite doable.
Now everything becomes easy-peasy. Remove the remaining screws to put the buttons aside (you'll have both the actul buttons and the tiny board with sensors - the latter sticks to the screen but once you remove the connectors, yu can take it off too). All the connectors are quite easy to remove if you hav a needle or something (just pull them out gently). I didn't worry about noting which is which as ther is practically no way you can mix them up - they're very different.
The rubbery plastic black surrounding of the board clicks in, so once you find the right spots you can lift them gently and take the thing off. You'll be left with the display covered by the shielding from the top and a thin metal board from the bottom. You have to remove two more screws to disconnect the main display plug.
And the final bit (that's where the thread's author had a problem I believe). My display was cracked but the shielding - fine. These two are glued together so I had to find some space for my finger nail and lift the shield. By slowly and gently pulling it apart I detached one from the other - and had to do the same thing with the metal board. Don't forget there's some extra stuff to remove from the back of the display - they're all glued but the glue will remain fresh enough for you to glue them again - this time to the new screen. The same applies to the front shield. I hope you won't let any dust sit on it in the meantime. You should have a screen protector on your new display if you bought it like I did. Remove it now and the display will be happy to stick to the old front shield just as if it was always there. The metal back will also fit in.
Now you can go through the above process backwards - just remember to connect all the connectors.
What I didn't do: I didn't use ANY glue putting the phone back together. As an effect the front shield is sticking out a bit (doesn't sit in the unibody tightly). It doesn't affect the phone itself but it gives you the funny feeling that something isn't 100% right. But I prefer that than screwing something up with a misuse of glue (glue can be disobedient).
The most important piece of information: the phone is working 100% correctly as if it was never disassembled by an amateur. Apart from two scatches on the back, the VOID sticker missing, the front sticking out slightly (less than a mm) and the missing battery slider (which I forgot to put back in and didn't bother to repeat the whole process for the sake of it) - there is nothing wrong with the phone. So if you ever crack you ever crack your Legend's screen - you can try fixing it yourself if you have the courage.

I would like to see some photos too But I'm never gonna take my phone apart - can't see the point

Foto's
Nice thread, i myself am wondering, if a better gsm antenna can be fixed inside the phone. and connect them to the 2 connections.
Do you have any pictures of the inside housing etc?

[How To] Fix Blank/Garbled Screen Issues

Last night my Transformer started acting up. I was browsing Facebook, and then I hit the back case just right while setting it down and the screen went all green and purple (garbled/glitchy). I kept pressing it and eventually the screen completely shut off, though the backlight was still on.
In this small "how to", I will show you what you need to reconnect to get the screen back to operational status.
There are two sets of tear down pics for the TF that I found. One comes from XDA member hybridau, found here and the other is Tech Republic. I'll be linking to pics from Tech Republic along with my own as they were a little more informative.
Take the device apart. Torx T5 is needed for the bottom. Work your way from the end they show in the picture here. Then, press down hard (but be gentle ) on the side until the bezel disconnects from the base (pic). Next, gradually work your way around until you get to the dock connector. I used a thin piece of plastic to go around the edges, but I've heard a guitar pic works well (I don't own one). Note: for me, the dock connector was the most difficult part of the bezel to remove.
Remove the four screws around the screen area and then the three around both long sides (six total).
Turn the device over (screen facing down) and remove the back cover (pic).
Now, look for the piece in the pics below. The ribbon needs to be pushed all the way in where you can't see any of the connectors. Mine was visibly out of place. It won't be fully out of place. I used my fingernails to gently move it back into place one side at a time. You may want to try something else... it's not the easiest thing to move back since there is tape that was/is supposed to hold the thing in place.
Full device view:
That's it! I turned it on while it was apart to make sure screen worked, but that's up to you. Put it back together the reverse way... much easier putting it back together. I put the bezel back on the opposite direction I took it off.
Little background on the device:
The device has been dropped a few times while in a protective case or when tossing onto the bed (no visible signs anywhere on the device -- seriously, the device was thrown and dropped more during shipping than it was in my possession), so I called ASUS and they issued an RMA on it. Of course, if the issues are caused by you (dropping), you have to pay. Regardless, shippings going to cost some money.
Thus, I took it upon myself to fix it. I knew it had to be a ribbon that was disconnected because I doubted it was any kind of screen problem. I had also read in another thread here that that when they sent their TF off the return said all the techs did was reattach the ribbon. What a waste of time, money, and effort?!
Anyway... hope this helps someone with the same issues I had!

Thank you very much for the details. It doesn't effect me but I have read several threads where people are having this issue. I am asking a mod to sticky this for awhile so it doesn't get lost

Thanks! I just hope it helps someone else contemplating doing what I did. I almost wasted time and money sending it to Texas for repairs!