yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Q&A, Help & Troubleshooting] DeGon:
Ok. I just finished cleaning the LCD.

I bought the cheapest product containing as much Lemonene as possible I found in the supermarket. It was a lemon air refreshener which contained only Lemonene, distilled water and some kind of alcohol for 4$. I soaked the glue with it and heated it a bit with the dryer. After waiting 5 minutes I begann carefully and patiently to remove the glue with a razor blade. I didn't use any force but repeated the soaking several times if the glue didn't come off, that took me around 30 minutes. After removing most of the glue, there was still of that liquid and thing glue traces on the LCD showing smearing traces. I then cleaned the LCD with pure Ethanole (Alcohol) on a microfibre towel to remove the rest of the Lemonene liquid. Both didn't leave any traces on the LCD. I just discovered that there are some little bruises and scratches on the panel (see pictures). But I hope they wont be visible, at least not if the screen is turned on. Some of these microscratches could be caused by the cleaning with the razor blade, but some could also be caused by the shuttered glass or a combination of glass particles and sawing the glue with the fishing line... Anyway, the result is good.

http://imgur.com/a/RyASp#0

(I wiped off the white wiping traces you see on the photo with a dry microfibre towel, after doing that photo, so its actually better than that.)

An the LCD still works. The only thing that's not so perfect, ist that there is a small line of dead or inactive pixels (third picture in the gallery below). I can't see any damage on the LCD on that line or even in that region of the panel. But I also don't know if the device had that flaw before I began tearing it down...

http://imgur.com/a/uoc5q#0

CORRECTION TO POST #18 The black film (I thought it was all adhesive film) was not glue, it didn't come off by through the cleaning procedure and it is still there. It's just kind of a layer, a polarizer or anything, glass or similar. But the glue was sticking exactly within the borders of that layer.
[Nexus 7 Q&A, Help & Troubleshooting] graphdarnell:
Boy, I admire your patience. Be that as it may, it doesn't pay if some damage will be done no matter how carefully you go about it, only because the material is so fragile. Hopefully, it's not the case, since lots who broke the digitizer would still have the LCD intact. Yes, it seems they used some optically transparent adhesive sheet on the thing, though I can't understand the reasoning. They don't need something which sticks that much in light of other designs for bigger tabs.

In any case, it will be quite a chore and unless you take pleasure in accomplishing something most people can't, perhaps this is not for the majority. Because the saving of about $40 ain't worth it. We'll see if you can find a way to glue it back to the touchscreen. Just for the heck of it, I'll follow your footstep this weekend to find out for myself. Wish me luck. And again, thanks for the info Degon.
[Nexus 7 Q&A, Help & Troubleshooting] graphdarnell:
OK. I took the plunge as advertised, and here are my observations:

1. I used an E guitar string as said, and it seemed to have helped greatly as it was thin enough, and didn't snap;

2. The assembly MUST be immobilized to minimize the risk of damaging the LCD;

3. Since the digitizer is larger than the lcd, this means immobilization at the digitizer's edges;

4. Control over what kind of force should be applied when you slice the string through dictates that you do it on a flat surface with the digitizer on top (or lcd at bottom).

So because you'd see what the metal string is doing, and also my hands have the tendency to lift the string up slightly when pulling on it. With the broken digitizer on top, the worst such motion would do is damage it further, without stressing the lcd's surface at the bottom.

Having said that, I can't think of a way to reconcile 3 and 4. How would you tie the digitizer down yet have it face-up on top? I guess the only solution would be patience. If you must hold it down with some clamps, you'd have to move the string very slowly – not to mention you'd have to loosen it to heat the glass up every minute or two.

In retrospect, I believe a knife with a flat, long and thin blade would serve much better than any string can since it allows for a straight-down slashing motion, and that way one can hold the assembly vertically with one hand and slash through the 2 components with the other.

Once the parts are separated, there are questions of how to remove the residual glue, and how to glue it back to the new digitizer, though these don't seem insurmountable.

In short, it is totally doable, though I'm not sure it's worth the time and justifies the saving, as the assembly has gone down in price quite a bit since since this thread was started.
[Nexus 7 Q&A, Help & Troubleshooting] DeGon:
Cool! Tell me what you've chosen for cleaning the LCD.

I agree that if you consider the necessary time and the price for the combo, it's not a big save. But for some people the cheapest solution might be the only affordable one. And for other people it might be just for the fun of doing it, especially after many people said that it was not possible.

As I wrote, the LCD of my Nexus 7 shows a line of only red pixels. I tried everything, that could be successful with dead pixels (special apps, rubbing with microfiber, pressure on the bonding), but without luck. I read somewhere, that if it is a whole line of stuck pixels, then the bonding of the LCD itself might be defective. One of those thousands of connectors at the borders might be broken or loose. So no luck for me with my original LCD. I don't know if I caused the damage when I separated it. Maybe it was already faulty when I bought it (as broken Nexus 7 for 45$), but I didn't see it...

But I found another original LCD with a shuttered glass on ebay for 15$ including shipping. The seller told me that the LCD works flawless. So I ordered that one and will try to separate it from the glass, as I did last time. Maybe this time I am going to make a little video... We'll see. I expect the LCD and the digitizer next week and will keep you posted...
[Nexus 7 Q&A, Help & Troubleshooting] graphdarnell:
Still in search of a solution. Did try orange cleaner and mineral spirits without much success as the glue re-solidifies when the liquid chemicals dry. Not sure what else to try. But willing, as at this point the lcd is just for experimentation. If I break it, lesson well-learned. Big deal.
[Nexus 7 Q&A, Help & Troubleshooting] DeGon:
Pure, cold-pressed citrus or orange oil (made of the rind of oranges or lemons) should work best, as it usually contains more than 90% Lemonene, which acts as solvent for various glues. If you don't find orange oil, look for liquid lemon air refreshers (maybe you better use those outside or with an open window). They are mostly made of a Lemonene - alcohol mixture, where Lemonene acts as aroma, while alcohol acts as solvent. Maybe check ingredients, before buying. Pure citrus/orange oil won't dry so fast. Leftovers can easily be cleaned with pure alcohol and a microfiber towel, which evaporates so fast, that the LCD won't be harmed.

Wait for 5-10 minutes after applying it, then start to clean it. You won't get off the glue at once, so apply the oil several times and wipe the glue/oil mixture away...

After my first experiment I'd recommend not to use a razor blade, but just wipe it away with a microfiber towel, by always using a dry edge of the towel (or several towels). Maybe also a plastic card (like a credit card or similar) would lower the risk to scratch the LCD.
[Nexus 7 Q&A, Help & Troubleshooting] tvdang7:
i want to try this.

Ive changed an s3 screen and it was rather easy why is this one so much more difficult.
[Nexus 7 Q&A, Help & Troubleshooting] DeGon:
I recieved the second cracked LCD and digitizer. This time I just fixated the digitizer with two clamps to a table, left it heat up in the blazing summer sun and then began "sawing" with my fishing line. It was much harder than the first time, as the combo was not as hot as with the hair dryer, but finally it worked out. The line often snapped. (Learning: use enough heat, if possible clamp the glass to a plate of copper or aluminium and heat it with a heat gun or hair dryer).

I already began removing the glue, but I am not finished yet. This time I took a plastic card to remove the glue and it's much better than a razor blade. The blade can quickly scratch the LCD, the plastic card doesn't.

Will keep you posted about the assembly once the LCD is clean...
[Nexus 7 Q&A, Help & Troubleshooting] graphdarnell:
Thanks Degon, for the updates. At least people now know they have a choice. If they have time and are dexterous enough, it's worth a try. While you do it with patience, time seems to slow down, which, as a by-product, is efficient therapy for the stressed-out.
[Nexus 7 Q&A, Help & Troubleshooting] shion420:
Hey thanks DeGon!! I bought the digitizer without knowing that that the broken one is fused to the LCD, i couldn't separate and end up with a broken glass and LCD, so I ordered ONLY the LCD , so I will have the LCD and Digitizer for separate, but i was afraid that it wouldn't work, thanks to your post i know that it can be done!!

Thanks again.
[Nexus 7 Q&A, Help & Troubleshooting] DeGon:
Absolutely. That shouldn't be a problem. I wouldn't glue them together. Just make sure the LCD can't move. And watch out not to have dust on the LCD or the glass (there should be a protective film on both).

Good luck.
[Nexus 7 Q&A, Help & Troubleshooting] dhaub:
Nice work with separating the digitizer from the lcd, breaking new ground for all manner of home DIY screen replacements on the cheap!

I am going to attempt the above posts recommendation and post my results when done. We shall see if glue is indeed required for the touch to be reliable.

Thanks!
[Nexus 7 Q&A, Help & Troubleshooting] DeGon:
Good luck, I am enjoying my glue-less Nexus 7 since weeks, works without flaws...
[Nexus 7 Q&A, Help & Troubleshooting] Sp0oner:
Is aliexpress the only place to get the screen and digitizer replacement? My Son's 16gb model has a cracked screen and it looks to be £76 with postage to have the parts sent from aliexpress in the USA. I'm not skilled enough to attempt separating the screen and digitizer and so will have to buy them already stuck together.

Just found this on ebay:

http://www.ebay.com/itm/OEM-Asus-Go...011&prg=8015&rk=3&rkt=5&sd=330958096486&#shId

Original oem part from Gadgetfix in USA, works out at just over £70 including delivery. I'm assuming followiung the original post instructions this would be an easy fix?
[Nexus 7 Q&A, Help & Troubleshooting] aznpulse:
I just replaced my LCD screen from Gadgetfix and my screen didn't turn on now. The nexus screen did turn on and boot before the repair, though the digitizer was cracked. So I was unable to turn off the unit. I tried to do the power + vol down trick for 30 seconds and that didn't work. I tried holding it down for an extended time and that didn't work.

I can feel the Tegra 3 chip warm up a bit. So I believe the device is on. All the ribbon cables are installed properly and I checked to make sure the battery was plugged in. Also I left it to charge over night so the battery must be full by now. Could I have missed something or caused something to happen? I don't have an spare nexus 7 to test against. Any suggestions would be great.

Update: Emailed Gadgetfix with the same info I mentioned here and they think it's a defective screen. I'm going to exchange for another one.
[Nexus 7 Q&A, Help & Troubleshooting] Bob Smith42:
Wow. This thread is really great, lots of information.

I broke my Nexus 7 2nd Gen FHD 2013 glass. Removed it this morning, pretty much using the same technique as given here in this thread. I destroyed about one-third of the glass edge but two-thirds of the glass edge are completely intact. The LCD display is still working so I will attempt to separate display and touch screen using same technique. I will report results later.

My only trick I can add to this thread is how I heated the glass. I used a large (100mm diameter) magnifying glass out in the sun. I focused the beam into about a 5-10mm circle on the glass, with a sharp pointy knife sliding under the glass. It worked great, except a couple times the clouds came. LOL

This is currently the best thread I've found with Nexus 7 screen replacement hint and tips.
[Nexus 7 Q&A, Help & Troubleshooting] repairsuniverse:
Thanks for the feedback. You used a magnifying glass to heat up the adhesive?! That's really creative!
[Nexus 7 Q&A, Help & Troubleshooting] kc5hwb:
I bought a replacement screen and digitizer for mine, and was able to remove the old screen from the bezel, but had to break the old screen even more than it was already. I managed to get all of the pieces and old adhesive off of the bezel and I am ready to install the new one, but I am wondering what sort of epoxy I should use. I don't want something that will damage or discolor it later on.

Thanks.
[Nexus 7 Q&A, Help & Troubleshooting] bigbop:
Use thin double-sided tape and cut short pieces to attach around the frame. That way you'll be able to remove it if necessary.
[Nexus 7 Q&A, Help & Troubleshooting] repairsuniverse:
Nice tip! That will ensure the frame is secure.
[Nexus 7 Q&A, Help & Troubleshooting] bigbop:
Well, since my previous comment, I've been looking at separating the LCD from the touch surface of one of the tablets I picked up cheaply. I have to build a fixture so I can saw the two apart with a thin wire.

The two parts are bonded to add mechanical strength. I don't think you'll get the same strength just using 2 sided tape but it IS much cheaper and easier than trying to re-bond the parts together using the special UV curable glue.
[Nexus 7 Q&A, Help & Troubleshooting] DeGon:
As you glue the digitizer glass to the bezel (glue or strong and thin double sided tape) it will be secure enough. Just make sure that the LCD can't move in it's frame (there is 1-2mm it could move). You can either try to use double sided tape along it's borders to stick it to the glass or you do it my way: I used Sugru (google that) to stick the back side of the LCD to the frame and keep it in position. Double sided tape between LCD and LCD-frame should also work, just make sure it's heat resistant.
[Nexus 7 Q&A, Help & Troubleshooting] repairsuniverse:
Great suggestions! Thanks for posting.
[Nexus 7 Q&A, Help & Troubleshooting] farmaan7x:
Nexus 7 3g LCD+DIGITIZER

I have a nexus 7 3g model whose digitizer is cracked .Now I would like to know if I can repalce with wifi model's digitizer and lcd.

If no,where can i get the lcd assembly for the 3g model?
[Nexus 7 Q&A, Help & Troubleshooting] kaijura:
I too, recently picked up a cracked N7 2012 from someone who wanted to get rid of it. Paid about $40 US.

Now my concern is the cost of the replacement parts. Seems there's a few ways to do this, from easiest to difficult:

(1) buy the complete OEM replacement LCD+Digitizer+Frame all pre-assembled. Sold on eBay from various chinese sellers and some USA, price range around $80-90US.

Etradesupply apparently has the rare white housing version for $91.

http://www.etradesupply.com/asus-go...itizer-assembly-with-front-housing-white.html

(2) used 8GB Nexus 7's can be had for around $60-100 off ebay. Just take them apart and swap parts

(3) Buy the LCD+Digitizer pre-assembled alone, requires re-using your old frame. These units run around $50-65 US on ebay and other sites like etradesupply, a tad cheaper, but requires reusing your old frame and the difficult part of removing, gluing and putting it together

(4) Buy a new digitizer for $10-20, a LCD separately for probably another $10-20 used, then put everyting together (harder version of #3) requiring gluing all components and such.

I'm having a dilemma on which to choose, I don't really want to spend more than $80-90 since I could practically buy a N7 with that, but I also don't want to be tasked with the gluing part..

---------- Post added at 11:36 PM ---------- Previous post was at 11:34 PM ----------

3G unit needs a different frame because of the placement of the components are different. Here is one, very expensive at $110 US.

http://www.ebay.com/itm/LCD-Display...ablet_eReader_Accessories&hash=item19dfbb81b1
[Nexus 7 Q&A, Help & Troubleshooting] repairsuniverse:
We have the LCD replacement for your model available at RepairsUniverse (dot) com.
[Nexus 7 Q&A, Help & Troubleshooting] Bob Smith42:
I would not buy the separate parts, because I think there are tricks to keeping the LCD and touch digitizer bonded, aligned, lint free, etc.

Cleaning the frame and gluing is not very hard. But, be very cautious because the glass is very thin and will break with little pressure. Also you have to align the LCD and touch digitizer perfectly in the frame (with tape or glue) to prevent screen pressure from cracking the glass again. In my opinion this is the advantage of including frame.

I will probably do #3 (or #1) on mine in about 12 months. I have a Nexus 7 2013 wi-fi and the prices are very high now, but steadily dropping about $2-$5 per month. LOL

When I took mine apart and cleaned the frame, the cleaner got on the LCD and touch digitizer and they separated. They were adhered only around the edge. It did not matter because both the LCD and touch digitizer were cracked and useless. I mention it so you will be careful.

Another thought of mine was to only attach the LCD and use a mouse on the device. Sure no touch is a disadvantage but running it disassembled allows some neat demos. You could wire up some external storage, USB hub and components, etc. I assume pogo pin (2012) or QI (2013) charging in this configuration. This line of thought assumes you do not need to use it as a touch tablet.

Good luck.
[Nexus 7 Q&A, Help & Troubleshooting] DemonHunter92:
alright, I went through the entire thread and did not find any similar situation.

I also used double sided tape for the frame and it seems all went well. The problem i have is this:

I had to replace the screen and digitizer hence it was broken. So i replaced it. I boot up my N7, it starts to show the logo and all, it boots all the way up to the home screen, but the colors are 16-bit colors and also i have a separating vertical line right in the middle.

I thought I didn't insert correctly the con7311 ribbon that's from the lcd to the motherboard so I "tear it apart" once again. I unplug that ribbon and plug it in again with a lot of caution.

I want to boot up again and all I have now is a black screen flickering with that line in the middle. I don't see any boot logo, I don't see anything at all, and yes I've checked the battery cable more than 5 times.

(It's really frustrating)

Any hints are welcomed as I'm really desperate.

Thanks
[Nexus 7 Q&A, Help & Troubleshooting] bobbywolly:
DemonHunter, it is probably a fault in the LCD ribbon cable connecting the LCD panel to the main board. These are prone to failure, if you have access to a replacement give one a try.
[Nexus 7 Q&A, Help & Troubleshooting] iTiS_EST:
Google Nexus 7 3G (32GB) ME370TG REV 1.2 vs 1.1 vs 11.1 LCD Screen Flex Ribbon Cable

Google Nexus 7 3G (32GB) ME370TG REV 1.2 vs 1.1 vs 11.1 LCD Screen Flex Ribbon Cable

I repaired Google Nexus 7 3G (32GB) ME370TG

(changed brouken Touch Screen Digitizer Glass Lens ebay.com/itm/400566631067 )

were have bouked too LCD Screen Flex Ribbon Cable ME370TG_LCD_FPC REV 1.2

I bay (this: ebay.com/itm/400539896573 ) but then sow this not working in my Nexus 7 3G

and text in brouken Flex Ribbon Cable is ME370TG_LCD_FPC REV 1.2

newone is ME370T_LCD_FPC REV 1.1 and REV 11.1.

then I sow the tifrent too in (LCD side) pin 4 and pin 31 what was opened (N.C/floating)

and in motherboard side is pin 13 and pin 15 contact to GND (Ground).

Nowhere I have not seen sales that cable what fits whith my Nexus 7 3G cable (ME370TG REV 1.2).

I had to do it yourself ME370T_LCD_FPC REV 1.1 --> ME370TG_LCD_FPC REV 1.2

( unlink grounded motherboard side is pin 13 and pin 15, connect pins motherboard side to LCD side pin 13 -> 4 and 15 -> 31 ,

solder two side with 0.8mm wire )

My taked pictures: plus.google.com/photos/113040175642762602810/albums/5926255994523265889

( url: goo.gl/KqDz81 )
[Nexus 7 Q&A, Help & Troubleshooting] nfiniti9:
So I replaced and LCD/digitizer in a 32GB model and the digitizer still does not work with the new one i received. The screen looks great. Any ideas?
[Nexus 7 Q&A, Help & Troubleshooting] DemonHunter92:
Bobby

I have ordered a ribbon from ebay and I'm "patiently" waiting for it. I'm curious if it'll do the trick - I hope so.

iTiS_EST

I don't get much of what you're saying

nfiniti9

check the ribbon that ensures digitizer to work

double check those pressure clips. And be careful with those. They're quite sensitive
[Nexus 7 Q&A, Help & Troubleshooting] iTiS_EST:
Be careful about with Flex Ribbon Cable "ME370TG" "Rev 1.2"

My glass screen replacement could not be without defects (wach my attached picture: "2013-09-23-3694.jpg (3 of 4)" ), three curved (wire) scratch and 1px black line the full length of the LCD screen.

My english language is bad. But try to understand my story. I was Google Nexus 7 3G (32GB) ME370TG and beak LCD Screen Flex Ribbon Cable. I bought a new (eBay). But the new did not worked (only the backlights LEDs worked but the screen was black). Then I discovered the difference. Was written in the old/original/broken "ME370TG" and "Rev 1.2". Was written in the new what not working with my screen "ME370T" and "Rev 1.1". Then I discovered the next difference, which had two contacts/wire in flex ribbon cable (look at my pictures). The same cable (ME370TG rev 1.2) I have not found anywhere to sell/purchase. Only available for purchase ME370T rev 1.1. Then I make itself modification (see my previous posts) and then it worked.

Morale: Be careful about with Flex Ribbon Cable "ME370TG" "Rev 1.2" fragile and easily breakable (no spares available).

I also had a similar way, until I discovered that it's broken cable (LCD-side Flex Ribbon Cable copper contacts are broken/fractured, after bending/flexion) (wach my attached picture: "2013-09-21-3607_.jpg (4 of 4)")

( I found one cable eBay [Item condition: for parts or not working]: ebay.com/itm/131001605357 )

maybe you have the same problem that I had, difference between the model ( ME370TG and ME370T or Rev 1.2 and Rev 1.1 )

Google Nexus 7 avable four different model:

1) Google Nexus 7 (2012 version) Wi-Fi (memory: 1GB, storage: 8GB or 16GB or 32 GB), LCD 1280x800 pixels (216 ppi) (model: ME370T)

2) Google Nexus 7 (2012 version) Wi-Fi + Cellular (memory: 1GB, storage: 32 GB), LCD 1280x800 pixels (216 ppi) (model: ME370TG)

3) Google Nexus 7 (2013 version) Wi-Fi (memory: 2GB, storage: 16GB or 32 GB), LCD 1920x1200 pixels (323 ppi) (model: ME571K)

4) Google Nexus 7 (2013 version) Wi-Fi + Cellular (memory: 2GB, storage: 32 GB), LCD 1920x1200 pixels (323 ppi) (model: ME571KL)

Google Nexus 7 ME370T 16GB (Codename: Asus Grouper) Wifi Model, ME370T: pdadb.net/index.php?m=specs&id=3641&c=google_nexus_7_me370t_16gb_asus_grouper

Google Nexus 7C ME370TG 32GB (Codename: Asus Tilapia) Cellular Model, ME370TG: pdadb.net/index.php?m=specs&id=3968&c=google_nexus_7c_me370tg_32gb_asus_tilapia

... if my post was useful to you any kind of way, do not forget to click on the button: [:good: THANKS]
[Nexus 7 Q&A, Help & Troubleshooting] DemonHunter92:
ok, so my ribbon arrived. I replaced it and now instead of screen flickering and that middle line all i get is black squares. Something like a chessboard. I really don't know what else to do. Please help me out
[Nexus 7 Q&A, Help & Troubleshooting] iTiS_EST:
Take a photo of your screen and show it.

As little moved by the cable, the screen will change anything?

What model is your Nexus 7 (model: ME370T, ME370TG, ME571K, ME571KL)?

What model is your LCD Screen Flex Ribbon Cable (ME370TG_LCD_FPC REV 1.2 or ME370T_LCD_FPC REV 1.1 (or REV 11.1) )?