Hey guys I have a question. I recently changed the screen on my note 4 to a new non cracked one. Now I tried the screen with the s pen before I took the phone apart so I knew it worked. Well once I got the phone all back together the s pen on the new screen doesn't work anymore. What would control the s pen in the phone hardware wise that would make it stop working? I tried all the software troubleshooting ideas other than reloading the rom. Anybody have any ideas?
Probably the s pen ribbon cable not connected properly. I had the same issue when I personally repaired my n4. Realized it after the same issues u have and had to separate the lcd from the frame to easily connect both ribbon cables the same time.
Thanks. I'll check it out.
Did you manage to fix it? I have same problem. I got mine fixed at a phone repair shop. When I remove the s pen, the air command pops out but when I touch the screen, nothing happens.
svtthis said:
Thanks. I'll check it out.
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Screen has brown copper screen behind it, if you break that your spen wont work, also spen connector is pain is behind to put it back if you open the screen from back not from front, make sure its fully in use flash light to see
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Hi!
I just replaced the screen on a wizard because the old one got smashed.
Anyway, I connected it up, re-assembled everything, and turned it on. The screen stays solid white, and then goes dim once its presumably finished booting.
The weird thing is, I can still use the touch-screen because if I click at the top left, I can hear the menu drop down, and can select items from it!
Any ideas what I've done wrong, if anything?
Ive triple checked all the connections and it all seems okay!
Help!
Thanks
two suggestions, that might aid diagnosis, feel free to shoot them down in flames.
Have you connected the device using pocket pc controller or similar software application?
Have you tried hard reset?
Do keep us updated.
Smithjw said:
because the old one got smashed.
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lol.. i like the way you said that...
answer
I had a simular problem replaceing my screen. I know you will say it looks right but it isnt. the ribbon cable that the lcd fits into isnt properly seated the tabs that stick out on the sides of the ribbon cable need to be fitted all the way up against the fitting the tabs on your arnt pushed in resultin in a volatge connection but no video.
Well, I fixed my old broken G1 with new screen, touchscreen panel, case and keyboard.
Now I have 2 issue:
1) Sometimes my touchscreen goes grazy!! If I use the touch test application I see that sometimes when I touch the screen in an area there is another virtual touch in another zone of the screen. I read that it can depend from the current source when I charge the phone.. but I'm going crazy!! I opened my phone 10 times (I thought there was a problem in the cable that link TouchPanel to LCDPanel, because when I lock the cable with the clip it tends anyway to go out from the connector, now I put some scotch tape to fix but the problem is here.. so I think is another problem).
2) My volume rocker doesn't work!!
I bought 2 new keyboard to fix this problem, but no one of that fixed the problem. I thought the first new keyboard had volume keys broken, so I bought another one, but the problem persists!!
Now the Touch problem rarely happens, but the volume rocker is completely unusable..
Someone have experience about G1 assembling/repairing ?
Thanks and sorry for bad english
if you have put in multiple keypads have the same issue i would assume that it is the connection going to the motherboard. just a guess there but its either that or you have had a bunch of faulty keyboards.
only other thing would be a software problem
does the keypad work in recovery (let you go up down throughout the list) ?
as for the touch screen, probably need a new digitizer or flex cable, both are cheap and it sounds like you have the knowhow to replace them.
Ok, but digitizer is new!! screen also is new, and I have bought a total of 4 flex cable because I see that they are fragile (I broke the first I bought).
I tried to change flex cable but the problem remain the same.
The only thing that can be damaged is the LCD cable that links to the flex cable: it has a small cut where the cable have a curve, but the cut don't reaches the contacts (the cable is transparent). I also use some glue and scotch tape to mantein lock the cable.
The digitizer cable is connected to the LCD cable, and then they go to the flex cable that connect them to the motherboard.
The strange thing is that seems a software issue, because if I turn off and than turn on the screen, the problem is fixed for some seconds, minutes and sometimes hours...
Another strange thing is the possibility to control the screen with some metal objects from the moment that the virtual touch problem appear (I can control the screen also without touch it, with hand and piece of metal)
video:
have you tried a factory reset if you think it may be a software issue? if that dosent work you can try install a whole new rom.
really it sounds like it isnt the hardware since you appear to know what youre doing. i have a had a few phones that had screen (digitizer) issues and a new rom flashed cured it just fine
since you dont mind putting a few dollars into it, and your familiar with the inside, you can always try to pick up a cheap motherboard or spare phone from ebay or what have you, then swap the motherboard and you could then hopefully find out if it is the hardware or software
nagash91 said:
Another strange thing is the possibility to control the screen with some metal objects from the moment that the virtual touch problem appear (I can control the screen also without touch it, with hand and piece of metal)
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Huh sounds like you got a cheap digitizer than. Most good digitizers use heat to touch. If it's literally touch, then sounds like its a fake/meh digitizer. i hate the digitizers that aren't heat, but press. I see them all the time in those first samsuck touchscreen phones. And they usually die in a bit. I had a Samsung behold with a screwed up digitizer
demkantor said:
have you tried a factory reset if you think it may be a software issue? if that dosent work you can try install a whole new rom.
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Yes I flashed 3 or 4 roms after a wipe (I tried also super-wipe.zip), but the problem is here..
The digitizer works well some times, but sometimes get crazy (you can see in the video).
I don't that my new digitizer is fake, but I really don't know!
BTW I'm trying to repair my phone for fun (now I have desire z) and because I am fascinated by my old G1.
PS:
I see another strange issue--
If I touch the screen when the phone is on a table the screen digitizer is not very sensitive and can't take input from fingertips.
If I touch the screen when the phone is in my other hand, the screen digitizer is a lot more sensitive and it take input from fingertips.
My impression is that there is an electric field or something similar that disturbs the digitizer, and when I take the phone in my hand I discharge that field to ground. Also when I turn off the screen, seems that the electric field discharge so when I turn on the screen is ok, but after some seconds the field returns to disturbs the screen.
I really don't know, but is the impression that I have.. something that is not shielded.
Now I'll try to use my phone in airplain mode.
Thanks guys, I'm happy to see that this forum is still very active
Hello, guys!
Recently I bought an HTC One with cracked digitizer, but functional. It had a lot of scratches etc, but this is not important right now. I wanted to do a complete make-over so I bought replacement parts from the internet, I bought the front housing with the LCD screen and the back cover. I dissasembled the phone from the old housing (the one with the broken digitizer), and I assembled it back on the new housing. After all of that, I powered on the phone and it worked like a charm (the LCD and the touch-screen worked perfectly), but then I saw that the glass was a little out, I mean it was upper than the speakers cover, so I decided to take out the whole screen and to change the adhesive, because it was too loose and the screen wasn't staying properly. I succesfully did that, i put the screen back and everything was good, but when I wanted to start the phone, the screen remains black. And this is the problem I have. I mention that I worked very carefully with the screen, so I don't think the problem is at the screen. I disconnected and reconnected all the cables and still doesn't work. When I press the power button it vibrates and then it's making that sound like the phone is booting, but no image on the LCD. If I keep the power button pressed, the back and home buttons are blinking and then the same story as before, vibrates and then the sound. I really don't know what could be the problem.
I really need some help with this and I'm open to all of your suggestions. If you want more informations feel free to ask.
Thanks in anticipation!
To me it looks like you damaged one the flat flex cable.
When you took the screen out did it come like suddenly and maybe some tension was applied to the flat flex?
If I were you I would take it apart and verify the connection in the socket, maybe the socket was damaged or something and it doesn't make a good connection
I hope it works out for you
Thank you for your answer!
When I took out the screen, I took it out very carefully and there wasn't any tension applied to the flex cable, so I don't think this is the problem. I think it's more likely a problem with the socket on the motherboard, like you said, and it's not making a good contact. But what can I do about that?
I factory reset my phone to wipe all personal data and make it as new again. But as soon as it turned on again, It displayed the Huawei logo as always, then the logo of my carrier, and then got stuck in this weird screen (see photo) where nothing i press or swipe will give any reaction.
Tried the hard reset by pressing up and down volume and power at the same time. A different screen appeared for a second mentioning EMUI and below Installing update 5% and then suddenly an error appeared (see second photo).
Please dear experts here, let me know what is going on... I love this phone and was very happy with it until I decided to the factory reset which on other phones always helped me get original performance back.
EDIT: well this forum wont let me post links as a new member, i guess that includes images. so let me try like this
i66.tinypic.com/29ndu7b.jpg
i65.tinypic.com/ifyhyp.jpg
hope that works
No idea why but it's showing the smart cover lock screen when its supposed to only show with a Huawei P9 smart cover that is closed on the screen.
oh so you're saying it's showing the screen as if there was a cover on it? that would make so much sense because i've had the display replaced just a day before... so maybe they didnt do it right and now the phone has some pressure on the LCD and thinks it's a cover?
Yes, exactly as you said, it is thinking the phone has a smart cover on it.
How the smart cover works is phones is that they have a magnet on the smart cover that where if you were to put a magnet at the exact spot on the screen it will trigger the hall effect sensor (The spot where the phone would be told that the smart cover is closed).
Yeah sounds like something went wrong with the screen replacement but it's rather rare for this to happen as it would require an magnet to trigger the smart cover sensor.
so weird... i hope they can fix that issue it's still not working but i will bring it back today. thanks for explaining how the smart cover works!
do you know by any chance on which part of the screen those triggers are? or that trigger magnet, if there's only one?
sigekarhu said:
so weird... i hope they can fix that issue it's still not working but i will bring it back today. thanks for explaining how the smart cover works!
do you know by any chance on which part of the screen those triggers are? or that trigger magnet, if there's only one?
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did you manage to resolve the issue? i currently have this problem
smart cover works with magnet. One of the quick fixes is to take a magnet and pass it over the screen. As i believe because im working for huawei they send us some devices and seems like the microphone or the speaker was moved. Those two have magnet and so it conflicts with the smart cover. Try as i said to pass a magnet from the screen and see if that would fix it. I am going to highlight That, This is happening due a hit, drop or misplaced speaker or microphone.
vampirian said:
smart cover works with magnet. One of the quick fixes is to take a magnet and pass it over the screen. As i believe because im working for huawei they send us some devices and seems like the microphone or the speaker was moved. Those two have magnet and so it conflicts with the smart cover. Try as i said to pass a magnet from the screen and see if that would fix it. I am going to highlight That, This is happening due a hit, drop or misplaced speaker or microphone.
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im not using a smart cover and i cant get onto my phone because it shows the screen that the smart cover would show if it was on. if only i could get onto my phone somehow and turn the setting off:crying:
Read again what I wrote.
vampirian said:
Read again what I wrote.
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magnet didnt work
taynox said:
magnet didnt work
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then you are going to have a factory repair because its either the mic or the speaker in a bad position and its activating the smart cover since both of them have a magnet in order to work.
I've got a replacement screen that my friend had in his house. Mine was broken (both the display and the digitizer, the latter was acting very weird). I did the replacement myself, and when I was finally done, I noticed something. The Touch Screen wasn't working (I could see the image but no input was recognized). I tried opening it and checking every single cable to see if there was anything wrong, but there was nothing looking broken or out of place. When I was going to test it, I noticed another very weird thing. It actually works if I keep the back of the phone off (not the back interchangable cover, I mean the back of the phone that is screwed in place). The problem is that this phone has a very annoying design that makes it so the Wi-Fi, Speakers, Camera and some other stuff don't function well with the back plate off, speacially the Wi-Fi.
I trully have no idea what is happening or what is causing the problem with the touch screen, and have no idea why the back plate makes the screen act funny. Can someone please help me figure this out?
Perhaps something in the digitizer's flex cable is shorting with the back panel. Try putting a layer of electrical tape between the flex cable and the back panel.