How to get the adhesive tape to stick good after screen replacement? - Xperia Z3 Q&A, Help & Troubleshooting

I use original adhesive tape to connect the screen and backside. But everytime I fix a phone it does not stick good enough. I use clamps for 12 hours to get good pressure and also use a heatgun to heat it up before I put the clamps on. Still I have many customers complaining about the sceeen or backside coming off. So I end up using glue. Any suggestions on how to get the adhesive tape to stick good?

From what I've heard, the aftermarket China LCD's are a bit thicker than the original LCD. Many people solved this by using double stickers to make sure the edges are securely touching the tape. You might try that! And of course degreasing-degreasing and more degreasing! Cleaning is very very very important and underrated by many people.
hjna said:
I use original adhesive tape to connect the screen and backside. But everytime I fix a phone it does not stick good enough. I use clamps for 12 hours to get good pressure and also use a heatgun to heat it up before I put the clamps on. Still I have many customers complaining about the sceeen or backside coming off. So I end up using glue. Any suggestions on how to get the adhesive tape to stick good?
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Related

screws to replace screen stuck

So i ordered a replacement screen/bezel and it came with no tools. I used a tinny screw driver my friend had and got 2 of the screws off holding it together but the other ones are stuck so tight the screw driver metal broke while trying to get enough pressure to loosen them. They are starting to strip because they are stuck is there anything i can do to get them to loosen the grip they have? i need to get them off and fix this freakin thing.
Are you positive you're using the proper size screwdriver? I've replaced the screen in both mine and my wife's phones, and they were never that tight
Sent from my -P999 using xda premium
Yes you cant get any smaller than the size i used they just wont loosen up. They are tight enough that the screws are stripping there is no give even when applying downward pressure while turning thats why the small screwdriver broke. Almost feels as if they are fuzed in.
Will heating it up with a blow dryer loosen the plastic enough to get the screws out? or will the heat cause damage to the phone.
thegoochking said:
Will heating it up with a blow dryer loosen the plastic enough to get the screws out? or will the heat cause damage to the phone.
Click to expand...
Click to collapse
Heating will expand everything and make it more difficult. Using a hair/blow dryer is taking too much risk.
You should take the phone to a home depot or other store which sells high quality screw drivers, such as hardened tip jeweller's screw drivers, and get one of the correct/exact size. The jeweller's screw drivers can be pressed down with the palm of one hand while the driver's bit is rotated with the other one by turning the screwdriver's shaft. A pair of pliers can be use to turn the shaft which will give more torque to, hopefully, break loose the screw. Additionally, you could carefully spray the screw head and immediate area with compressed air until it is really cold. The cold will shrink the screw and the surrounding area slightly, maybe enough to enable you to unscrew.
Here's some info: http://ask.metafilter.com/191476/How-to-Remove-Stubborn-Laptop-Screws

Self dust-repair gone a bit wrong. Can you help me?

Hi xda, so I got tired of having dust under my screen and decided to try to fix this myself, I used many disassembly videos and this http://forum.xda-developers.com/showthread.php?t=1479734&highlight=dust as guides, initially I didnt open my phone completely, and used a hair dryer to heat and loose the glue, I guess that wasnt enough, then I finally separated the glass from the screen and procedeed the cleaning, everything good.
Then when I pushed the glass and realized there was a little space between the glass/lcd and the plastic frame (look at pic), tried to put the back cover in again and noticed the right side of the phone, the plastic one was kinda lifted and barely fitted my back cover again, reopened and realized this (look at pic) it seems that the main frame and plastic frame (pic again) got a bit separated, when I was trying to lift the glass i heard some cracks there, I tried pushing it gently but I dont want to damage the lcd, next thing im gonna do is disassemble it completely and hit gently the lifted side of the frame with a hammer so it fits flush again, before doing this, Do you have any sugestion or advice? Has this happened to you?
Also since I dont have a proper heat gun and I'll be using a hair dryer I would thank you if you know and can tell me what areas of the lcd are glued to the main frame, pic attached, if you know you could use paint to point them.
Im a bit worried about the tension the phone is getting with the cover on, I hope only the main frame is getting it... as the phone is pushed to its side (0.5-1mm maybe) I cant plug my headphones and i get slightly worse overall signal. Thank you in advance for any help.
Dom42 said:
Hi xda, so I got tired of having dust under my screen and decided to try to fix this myself, I used many disassembly videos and this http://forum.xda-developers.com/showthread.php?t=1479734&highlight=dust as guides, initially I didnt open my phone completely, and used a hair dryer to heat and loose the glue, I guess that wasnt enough, then I finally separated the glass from the screen and procedeed the cleaning, everything good.
Then when I pushed the glass and realized there was a little space between the glass/lcd and the plastic frame (look at pic), tried to put the back cover in again and noticed the right side of the phone, the plastic one was kinda lifted and barely fitted my back cover again, reopened and realized this (look at pic) it seems that the main frame and plastic frame (pic again) got a bit separated, when I was trying to lift the glass i heard some cracks there, I tried pushing it gently but I dont want to damage the lcd, next thing im gonna do is disassemble it completely and hit gently the lifted side of the frame with a hammer so it fits flush again, before doing this, Do you have any sugestion or advice? Has this happened to you?
Also since I dont have a proper heat gun and I'll be using a hair dryer I would thank you if you know and can tell me what areas of the lcd are glued to the main frame, pic attached, if you know you could use paint to point them.
Im a bit worried about the tension the phone is getting with the cover on, I hope only the main frame is getting it... as the phone is pushed to its side (0.5-1mm maybe) I cant plug my headphones and i get slightly worse overall signal. Thank you in advance for any help.
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Click to collapse
I wanted to try it myself, but didn't have the guts. Sorry to hear your problem.
The guide said "5. Clean off all the crappy double sided tape from the factory."
It seems to me that you have put the same double tape. I suggest you remove the LCD again, clean the old tape and apply a new one.
Good Luck!
Edit: Does your touchscreen work well?
elvisypi said:
I wanted to try it myself, but didn't have the guts. Sorry to hear your problem.
The guide said "5. Clean off all the crappy double sided tape from the factory."
It seems to me that you have put the same double tape. I suggest you remove the LCD again, clean the old tape and apply a new one.
Good Luck!
Edit: Does your touchscreen work well?
Click to expand...
Click to collapse
Dont be afraid of trying, i was also scared at first but bah, 1. There's no official htc support in my country 2. I dont trust repair houses. 3 I wont wait 2-4 weeks for something relatively easy. So why dont try by yourself?
"Clean off all the crappy double sided tape from the factory" I dont have double sided tape at hand right now, getting it in 2 days, however thats not the problem, the glass sits flush and tight even with the old tape, the problem is that as i said my phone somehow got wider and the back cover is hard to put. Thanks, im gonna need good luck.
Oh and yes my touchscreen works perfectly.
Dom42 said:
Dont be afraid of trying, i was also scared at first but bah, 1. There's no official htc support in my country 2. I dont trust repair houses. 3 I wont wait 2-4 weeks for something relatively easy. So why dont try by yourself?
"Clean off all the crappy double sided tape from the factory" I dont have double sided tape at hand right now, getting it in 2 days, however thats not the problem, the glass sits flush and tight even with the old tape, the problem is that as i said my phone somehow got wider and the back cover is hard to put. Thanks, im gonna need good luck.
Oh and yes my touchscreen works perfectly.
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Click to collapse
There's no HTC support in my county either. Maybe it got wider because of the heat. Even though the glass sits tight I suggest you change the old tape, cause that's what let dust in the first place. The guide said also smth about silicon, did you apply it?
Was it difficult to remove the LCD with the hairdryer? I don't have a heatgun.
LOL, seems I'm the one doing the questions now.
elvisypi said:
There's no HTC support in my county either. Maybe it got wider because of the heat. Even though the glass sits tight I suggest you change the old tape, cause that's what let dust in the first place. The guide said also smth about silicon, did you apply it?
Was it difficult to remove the LCD with the hairdryer? I don't have a heatgun.
LOL, seems I'm the one doing the questions now.
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Click to collapse
No it didnt got wider because of the heat, when i was trying to open it i forced the bezel/metal main frame (4th pic) so it unclipped. Getting the double tape tomorrow. No way im gonna put silicon, ill put just 4 tiny squares of doublesided tape, i would rather clean it monthly than that, also i keep it always clean, it just had the dust before (second hand).
Yes, it was very difficult to remove the LCD, dont even try this without a heatgun, i was lucky to not mess something else duh i even crushed the LCD cable a bit, but it works normally. Only solution now is to get a new main frame.
Dom42 said:
No it didnt got wider because of the heat, when i was trying to open it i forced the bezel/metal main frame (4th pic) so it unclipped. Getting the double tape tomorrow. No way im gonna put silicon, ill put just 4 tiny squares of doublesided tape, i would rather clean it monthly than that, also i keep it always clean, it just had the dust before (second hand).
Yes, it was very difficult to remove the LCD, dont even try this without a heatgun, i was lucky to not mess something else duh i even crushed the LCD cable a bit, but it works normally. Only solution now is to get a new main frame.
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Click to collapse
Thanks for the advice. I hope you manage to fix your phone

Best way to stick the digitizer bach to the screen

So it's all about a Sensation with a defective digitizer. There are countless videos, DIYs, forums posts and blog articles on how to take the phone apart and to separate the digitizer form the screen. However, there is nothing on how to glue the new digitizer back in place. The options I've seen so far are:
1. Use 3M 2mm tape
2. Use what's left of the original glue (reheat and try to make it adhere to the new digitizer)
3. Use super glue
I live in Germany and it turns out that it's almost impossible to find 3M 2mm tape out here. So, could I just use any available type of double-sided tape and just cut it in 2mm stripes? What's the thickness of this 3M tape (need to know so that I can find a proper alternative).
However, the bigger question is, which of the three options mentioned above is the best? I guess that trying to make it work with the old adhesive leftovers is the worst thing to do, but is 3M (or equivalent) tape better than super glue? I mean, it's important that no dust comes through between the digitizer glass and the lcd screen... and that the newly fitted digitizer withstands the influence of high and low temperatures (hot sun in the summer, cold ice in the winter).
So, what would you say is best? I've never done this before, so I guess you have much more experience than I do...
Thanks
PS. Please excuse the typo in the thread title
icu___ said:
So it's all about a Sensation with a defective digitizer. There are countless videos, DIYs, forums posts and blog articles on how to take the phone apart and to separate the digitizer form the screen. However, there is nothing on how to glue the new digitizer back in place. The options I've seen so far are:
1. Use 3M 2mm tape
2. Use what's left of the original glue (reheat and try to make it adhere to the new digitizer)
3. Use super glue
I live in Germany and it turns out that it's almost impossible to find 3M 2mm tape out here. So, could I just use any available type of double-sided tape and just cut it in 2mm stripes? What's the thickness of this 3M tape (need to know so that I can find a proper alternative).
However, the bigger question is, which of the three options mentioned above is the best? I guess that trying to make it work with the old adhesive leftovers is the worst thing to do, but is 3M (or equivalent) tape better than super glue? I mean, it's important that no dust comes through between the digitizer glass and the lcd screen... and that the newly fitted digitizer withstands the influence of high and low temperatures (hot sun in the summer, cold ice in the winter).
So, what would you say is best? I've never done this before, so I guess you have much more experience than I do...
Thanks
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Its not quite the same but I had this problem when replacing a LCD screen on a nintendo ds lite (bottom touch screen). I just went with the double sided sticky tape as I felt I could be far more accurate with it compared to super glue. I just cut it into the sizes I needed with a sharp knife and fitted it to the digitizer And then to the LCD. I have had no issues with it so far, its not slid or anything but then again it is housed in casing... if I was you I would try the tape first and if it seems unreliable try for the glue, just make sure you don't miss as it will muck up the digitizer if its no placed right I believe.
Good luck
Tapped out from my sexy nexus 7
I'd also say that the double sided sticky tape is probably the best thing to try out.. However, I'd like to know how thick the tape is. It should be thick enough to make the glas digitizer stick and also as thin as possible so that the new screen isn't appear to be higher than the old one...

Tips for Digitizer Screen Replacement?

http://www.amazon.com/gp/aw/d/B00AHTFNEM
This is the one I bought, for a reference. I'm just curious if anyone else has done it and what problems they ran into. I'm no stranger to electronics, so I'm not afraid to take it apart, I'm just worried that I'm going to end up doing something wrong.
For example, the glass and digitizer are fused together, right?
And do you go around the front or the sides with the heat gun? 750w or 1300w?
Here's a good DIY video:
https://www.youtube.com/watch?v=_70-W9JjVjg&feature=youtube_gdata_player
A hair dryer should suffice so I don't think you need such a powerful heat gun.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 4 Beta
wrathofnero said:
http://www.amazon.com/gp/aw/d/B00AHTFNEM
This is the one I bought, for a reference. I'm just curious if anyone else has done it and what problems they ran into. I'm no stranger to electronics, so I'm not afraid to take it apart, I'm just worried that I'm going to end up doing something wrong.
For example, the glass and digitizer are fused together, right?
And do you go around the front or the sides with the heat gun? 750w or 1300w?
Click to expand...
Click to collapse
I posted this thread a few days ago after replacing the digitizer myself. The video referred to by another member was for a phone, and personally I doubt a hairdryer would suffice for the job 'cause cell phones usually use light double-sided tape to hold the almost weightless glass. The tape on the Tab 2, on the other hand, is quite strong. You can use sheer force except there's no gap at the edge, front or back, and you might damage the LCD display in the process. I used a dryer for a few minutes and it did nothing to loosen the adhesive. Good luck.
That is an awesome tutorial. You're right about it giving confidence, as well as answering many of the questions I had. I guess I'm more concerned now over just various tips and tricks.
Is there any fine science to lining it up? How easily can it be fingerprinted and what would you use? Also, I've heard of WD-40 to remove the glue left over. What should I use if this one doesn't include any adhesive?
As you can see, I'm clearly a worrier. Got it honest.
wrathofnero said:
That is an awesome tutorial. You're right about it giving confidence, as well as answering many of the questions I had. I guess I'm more concerned now over just various tips and tricks.
Is there any fine science to lining it up? How easily can it be fingerprinted and what would you use? Also, I've heard of WD-40 to remove the glue left over. What should I use if this one doesn't include any adhesive?
As you can see, I'm clearly a worrier. Got it honest.
Click to expand...
Click to collapse
Lining it up is a no-brainer since the glass fits snugly into the frame. The lcd is a non-issue since it is separated from the touchscreen. As far as finger prints,I use a 50/50 white vinegar/water solution. Be sure to wipe it off with a microfiber cloth while it's still wet. For left-over glue,I use either Goo-gone and 91% alcohol afterwards, or acetone. WD40 is fine though I am not sure it would not leave any residue after drying out. In case the new one has no adhesive, the better choice would be the outdoor double-sided tape for 5 lbs at Home Depot, or failing that, loctite outdoor epoxy though this one could get messy.

glue for screen ?

Hello,
After changing the screen of my moto G, the new one is no longer stuck and is moving.... I had to remove the original glue (tape?) with an hair dryer.
My question is : with what I then paste the screen?
thanks a lot
Phil77560 said:
Hello,
After changing the screen of my moto G, the new one is no longer stuck and is moving.... I had to remove the original glue (tape?) with an hair dryer.
My question is : with what I then paste the screen?
thanks a lot
Click to expand...
Click to collapse
This is a very annoying problem of the chinese displays that come with a frame or pre-applied tape.
The display+lcd assembly is too heavy to be held by any normal 2-sided tape (3M 300LSE for example).
After hours of checking how the original thing was made it turned out that it has a rubber-like gasket that is glued to the frame, which acts as bonding surface for the 2nd glue used to hold the digitizer to the frame.
These are all my own findings, sadly no pne is discussing this problem anywhere or at least I didn't find any.
I've used a transparent epoxy (65-70% resin ~30-35% oxidizer so the compound hardens slower).Use a wooden tooth pick to apply the glue on the frame, don't put to much of it, just a hair-thin line.
Put the screen on and press it well and be ready to clean off any glue that may come out of the edges. The epoxy is easy to clean until it's set, use isopropyl alcohol 99% or some dry contact cleaner with a cotton cloth or kitchen paper.
The drawback of using epoxy is once it's set, you won't be able to remove the screen from the frame by any viable means.This is not a problem tho, since you can buy the whole assembly, should you need to replace the screen again.
Good luck.
:good:
Thanks a lot for your tip.
I'm gonna look for epoxy and try to do as well as you
Thank a lot once more
same issue
Hi,
Thank you very much for having shared your experience with us .
I have exactly the same issue with my Moto G and I've finally found a way out thanks to you. I would try this but I'm afraid of doing it bad. Should I apply the glue exactly in the border of the display? Do you happen to have any video showing it in detail?
Have a nice day
birikif said:
Hi,
Thank you very much for having shared your experience with us .
I have exactly the same issue with my Moto G and I've finally found a way out thanks to you. I would try this but I'm afraid of doing it bad. Should I apply the glue exactly in the border of the display? Do you happen to have any video showing it in detail?
Have a nice day
Click to expand...
Click to collapse
Hello,
You should apply the glue in the frame, as close as possible to the outer rim and spread it as much as possible on the thin inner lining where the plastic of the frame and the glass make contact.
You can also use universal transparent glue, like JIP or Henkel... etc.These glues are a bit more liquidish and it takes more time to set properly, but they are also more flexible and you can also remove the display with heat, should you have the need to .
Sorry no videos available on this, but with a little effort and reading you'll be fine.
liveroy's advice is great. I've followed it with success, although the screen I bought has the dreaded phantom touch issue (cheap ebay job!) and will have to go back (this issue was apparent even before I glued it to the mid-frame).
Firstly I separated the screen from the mid-frame with two small suction cups, designed for removing halogen light bulbs, on the top and bottom of the glass. This worked well, but I had to use very gentle tugs to ensure I didn't tear the ribbon cable. Because the double-sided tape used was already separating, this was quite an easy part of the job.
I used Araldite 2-Tubes Standard Epoxy, because it has a very long cure time, which allowed me to work slowly. With the screen and mid-frame completely separate and cleaned up, I then threaded the screen's ribbon cable through the hole before glueing. The trickiest bit was putting the epoxy along the frame where the ribbon cable is; to do this I just wedged some folded paper between frame and screen while I layed down the epoxy. I guess I could have just done this bit first and avoided the need for a paper wedge (this was used to prevent prematurely sticking the screen to the frame before all the epoxy's down).
I used the screen's plastic film to protect the screen from the epoxy, and cleaned the excess epoxy with an old bottle of disk head cleaner I found lying about (smelt very alcoholly!) and cotton buds. I used some clothes pegs to clamp the screen to the frame, but I took them off after a few hours. Then I left it for a couple of days. The result was as good as I could have hoped for. I can see a little bit of the dried epoxy in the very narrow trenches between the mid-frame and glass, but this doesn't bother me. Way better than having light streaming through the sides, and it seems like a really solid grip! When in use and getting warm I could still see a bit of lift at the sides, but because it was glued there was absolutely no gap.
Going back to the original need for this fix -
On my phone I believe this is due to a warped, concave logic board, effectively peeling the glass away from the mid-frame when fitted. If it were totally flat then I doubt this would happen. I guess the aftermarket screen manufacturers didn't factor this in when they decided to use "weak" double-sided tape. I've also noticed that, with the new screen in place, the outer back shell of the phone, that you put on last, doesn't quite fit at the bottom like with the old screen - there is now a small a gap where the inner plastic housing is exposed. I think this is because the new mid-frame is straighter than the old, and the old shell has itself bent over time.
Hi,
I'm happy to found this thread. It's the second screen i replace on my Motorola Moto G4 Plus because of this; you can view my comment here : https://www.witrigs.com/oem-lcd-screen-assembly-for-motorola-moto-g4-plus-black#customer-reviews
I will try to use super glue on the top of my screen, hope it'll work. EDIT 20190122 : it worked (be careful to not add too much glue like i did : it was covering camera when pressing !)
Thanks

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