My screen is broken but what part of it? - EVO 4G Q&A, Help & Troubleshooting

I've searched and I can't find anyone else that has the same screen issue as me (they may have but without a picture I can't be certain).
Anyway, I was pulling stuff out of my gym locker yesterday and something knocked my Evo out. Of course it fell flat on the bench, thus causing the screen to become damaged. However, my "cracked" screen doesn't look like any of the other cracked screens I've seen online. My front piece of glass (the part your finger actually touches) remains intact and in great condition (I know I can still unlock the screen because I can feel the haptic feedback of the capacitive buttons), but it's like the screen behind it is what's actually damaged.
Is that correct? And what part would I need to order to replace it. Thanks

I believe that its the lcd

yep thats the lcd itself

Yep, sounds like your digitizer is ok, but your lcd is borked.

Thanks everyone. Will probably be picking up an EVO 3D, then selling my OG after I fix it.

Related

HTC EVO digitizer glass cracked:(

I have hardware version 0003, the display works fine just the top glass got cracked, can someone point me in the right direction for a new digitizer assembly? I found one on amazon new for 24$ but have no idea if it will work for my phone.0002 vs 0003 I read have different ribbon cables.
Sent from my EVO.
When this happened to me, I couldn't tell that the LCD had also cracked. I bought the digitizer only, and when I took apart the phone, I realized that I didn't have the parts I needed to fix it.
I can tell you that the correct P/N for the Novatel screen is 2V6A, but I am not sure of the P/N for the Epson screen. Check which screen you have by adjusting the brightness.
If when you adjust the brightness it switches with a fade effect, then you have a Novatel screen and you need the 2V6S ribbon. However, if it switches quickly and suddenly from one brightness setting to the next without a fade effect, then you have an Epson panel and you need the other ribbon cable.
So, I know it's been posted a lot in other places but I couldn't find like, a definitive answer as to if there are different digitziers? Am I just confused?
I would like to try and just replace the digitizer and glass over top of the LCD, my LCD works fine, the cracks are really thin and only a few going across diagonally. It fell from maybe 2 feet off my lap onto a parking lot surface.
I understand there is two LCD pannel types like you said, but are there two digitizer types/sizes?! for that ribbon cable.
I'm completely comfortable with taking it apart, I'm just worried I'll get the wrong part and find out the screen is also cracked and have to end up not using it for days until new stuff ships.... bleh
I've found digitizer+glass on amazon for 24-30$.
How do I adhere it to the LCD though, says doesn't include anything to do that.
EDIT: Found this gem: http://www.durapowerglobal.com/HTC-EVO-4G-Digitizer-Adhesive-_p_1166.html
Adhesive wont be a problem I just need to know about the glass/digitizer
EDIT2:
OKAY, if you want to ignore all i've said so far here is my real question of what I need to know.
http://www.durapowerglobal.com/HTC-...iginal-With-Installation-Adhesive_p_1103.html
Is there only ONE digitizer/glass piece on any given HTC EVO 4G? Or is there two different types like the LCD?

[Q] Touchscreen crack?

Hi, I am in dire need of help...
I dropped my phone, broke the screen and swapped it out for a brand new one. During the swap I managed to make a very small crack at the edge of the new screen... Now the top 3/4 inch doesn't respond.
I find this very strange since when my screen was completely shattered touch worked normally, but now a small crack and it doesn't work? Does that sound normal? Could there maybe be any other underlying problems?
Any help or input would be appreciated...
Thanks
You clearly don't like your DHD and DHD don't like you
Joke.
Well, this surely sounds like interesting but as far as i know, you managed to break the connectors of touchscreen during the replacement. Touchscreen fails (although not completely) = you clearly need a new one, if it is even possible to replace. And about the thing, that this didn't happen when u dropped the phone is because it might only damaged it a little and it still worked, but when changing the glass, the damage extended.
The touchscreen is a layered device. When you shattered it you only broke the outside layer. Sounds like you broke another layer plus the outside layer this time.
Thanks for the replies guys.
Layered digitizer, didn't know that. That makes sense to me because the crack in my new screen isn't superficial (meaning I can't "touch" the crack, it's on the inside I guess).
Thanks again, I guess I'm buying a new digitizer and hope that works, sucks not being able to touch the top portion of the screen!

Bubbles under digitizer? No screen protector

Hi all. Quick searching leads me nowhere as there are thousands of problems concerning issues I'm NOT having. Sorry for the crappy 3ds camera pic, it's the only thing I have at my disposal right now besides the phone. As I said in the title, I'm not using a screen protector - this is a stock phone right out of the factory with no accessories, albeit aged a bit.
If you'll take a look, you'll see two screen bubbles. The huge funky-looking one at the top started out looking like the one at the bottom, and grew over a period of a few weeks. The bottom one started out really small and doubled in size to what it is now, but has since stopped.
It's really annoying and starting to bother me, but I was wondering if anyone had experienced similar issues, or has any input whether or not I can maybe fix this thing without having to get a whole new screen/digitizer/whatever. No replacement plans on this phone so gotta figure something else out. Any idea what's going on?
D-Lew said:
Hi all. Quick searching leads me nowhere as there are thousands of problems concerning issues I'm NOT having. Sorry for the crappy 3ds camera pic, it's the only thing I have at my disposal right now besides the phone. As I said in the title, I'm not using a screen protector - this is a stock phone right out of the factory with no accessories, albeit aged a bit.
If you'll take a look, you'll see two screen bubbles. The huge funky-looking one at the top started out looking like the one at the bottom, and grew over a period of a few weeks. The bottom one started out really small and doubled in size to what it is now, but has since stopped.
It's really annoying and starting to bother me, but I was wondering if anyone had experienced similar issues, or has any input whether or not I can maybe fix this thing without having to get a whole new screen/digitizer/whatever. No replacement plans on this phone so gotta figure something else out. Any idea what's going on?
Click to expand...
Click to collapse
Is the plastic actually raised up? Can you see it when the screen is off? To me it looks like the digatizer may be going out, but its hard to tell from a pic.
It appears to be sealed and working fine... just has bubbles. I don't really know much about the insides of this phone, but it almost looks as if whatever is behind the digitizer is slightly warped and might be causing some contact with the glass or something like that. Reflections (off what is behind the screen - lcd? Not the reflections off the glass) tend to bend near the bubbles, whereas everywhere else behind the glass is pretty straight.
Essentially it just looks like water droplets or air bubbles forming on the inside surface of the glass, but it's never seen water before. I don't think the digitizer is failing.
Same problem, can I fix this myself?
Hi guys, I have the exact same problem on my HTC Desire. Touch is working fine, the pixels underneath are ok... yet this thing is expanding. What used to be 3 little bubbles near the very corner moved and turned into this amoeba looking thing after a few months.
Here are a few other shots.
Hope someone can let me know the possible verdict? Is it gone? Can it only be repaired by a professional or can I expect to be able to "clean up" the inside of the screen if I dismantle my phone as it is done here?:
http://forum.xda-developers.com/showthread.php?t=1566313
Maybe the liquids from the lcd are boiling from the heat? Sounds dumb but is a possibility
Sent from my ADR6300 using xda app-developers app
Yikes. Mine is still having the same issues. I'm thinking about just tearing it down soon and figuring it out myself. A little nervous working on something with such small components. Any tips for a first teardown? I need to get a T6 torx and I've already looked at a couple disassembly guides, was a while ago though.
As far as I can tell, I will have to replace either the digitizer/glass or the LCD. If it's the latter I'll probably just upgrade the phone cause they seem pretty pricey.
Ok, I did what I said and investigated myself. Unfortunately, I broke my phone doing it.
The problem is the front glass/digitizer. I couldn't get the LCD off, but I pried it back enough to see bubbles through the glass looking from the inside.
I broke my LCD prying on it, now I have an ugly black spot. Guess I'll be buying an LCD and a digitizer now. Anybody have some spare ones, or know the cheapest place to get them?
D-Lew said:
Ok, I did what I said and investigated myself. Unfortunately, I broke my phone doing it.
The problem is the front glass/digitizer. I couldn't get the LCD off, but I pried it back enough to see bubbles through the glass looking from the inside.
I broke my LCD prying on it, now I have an ugly black spot. Guess I'll be buying an LCD and a digitizer now. Anybody have some spare ones, or know the cheapest place to get them?
Click to expand...
Click to collapse
There are some digitizers on ebay for about $20 USD. i dont know about LCDs cause i never needed to replace mine but i would assume that they would be a little more expensive. Also, make sure you get the digitizer WITH the bezel because it will make your life a ton easier.
I'd better not touch it then
Sorry to hear about your LCD, D-Lew
Guess I wont be touching mine on my own. I'll definitely break it trying to do the same thing as you. I wonder if it's gonna break my phone if I just leave it as is. I mean, apart from the fact that it is there, it is not affecting the performance at all.
The bubble might get bigger. That's all you have to worry about.
Sent from my GT-P3113 using xda app-developers app

[Q] Replaced broken screen, thin line on screen unresponsive

Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!
wi11ow said:
Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!
Click to expand...
Click to collapse
Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.
graphdarnell said:
Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.
Click to expand...
Click to collapse
I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!
wi11ow said:
I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!
Click to expand...
Click to collapse
Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.
graphdarnell said:
Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.
Click to expand...
Click to collapse
I don't know about the mechanics of the touchscreen, so all of this is helping me
I took a look at that tool, and I posted the result of drawing on imgur: paste "oyIt3bg" after imgur.com (I'm apparently still too 'new' to post links, sorry about that). It is clearly one band, very consistent. I think I should probably talk to the shop I got it from and ask for a replacement. Which sucks, because this particular parts took 3 weeks to even get here. Anyhow, glad I know what the problem is now. Again, thanks for all your help, I appreciate it
Hello fellow dutchie,
I have experienced this problem on my Nexus 4, and after having replaced the LCD+digitizer I also had issues with touch responsiveness in exactly the same areas. As silly as it would sound beforehand, it doesn't seem to be the screen or digitizer. Best... to give up.

Cracked glass, LCD fine, but is my digitizer broken as well?

Hi folks.
I've cracked the screen of my LG G3 and want to give one of the 'screen replacement' kits from eBay a go.
However, how can I tell if my digitizer is deffinitely broken as well?
There is one big crack from the top to the bottom of my screen, about 3/4 of the way across from the left of the device. Everything to the left of the crack (most of the screen) works fine, whereas everything to the right is unresponsive. Does this sound like the digitizer if broken as well, or is the cracked glass just prohibiting it from recognizing the touches?
The LCD it's self appears completely undamaged.
Does it sound like I need to just try replace the glass, or should I probably be looking for a glass+digitizer kit replacement?
Thanks everyone!
Well I feel stupid.
After doing a bit more research I've found out that the digitizer basically is the glass, so I can't replace one without the other - so it was a pointless question
Feel free to delete this post if you want!
Rich

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