I have a LG K20 plus but saw no forum for that phone and the LG K10 is the closest I see listed. I hope it's ok to post here...
I cracked the screen on my LG K20 plus. In the process of fixing it, I lost the speaker and scratched up the bezel trying to get out a stripped screw. So, after some research here and verifying it was ok, I bought the same phone to do a mobo swap. The only difference was it had a bad esn which made it cheaper but since I was using my mobo, it didn't matter, right?
I received the phone and turned it on. Everything worked fine but, of course, it was locked due to bad esn. I took out the mobo and put my original mobo in and turned it on. It looked perfect but it didn't respond to any touches. I couldn't swipe to unlock it or put in my passcode.
I switched the mobos back to their original phones and touch abiliry (digitizer?) worked on both. I switched mobos again, and again no touch was recognized. For now I'm using my phone with a mouse just to verify everything else is working, and it is. Can someone please help me to figure out what happened and why the working digitizer fails after mobo swap?
Thank you to anybody who can help me. I'm stuck without any guidance
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I recently recieved a T-Mobile Touch Pro 2 from a trusted E-Bay seller. When I recieved the phone it worked perfectly, but the digitizer screen was cracked up. I found the T-Mobile model digitizer online and replaced it. Now the phone is DEAD. I have checked and rechecked EVERY ribbon cable and connection I can find and have insured all is attached properly. Battery has a full charge and works (tested it on my Dash 3g as they use the same battery). I even tried plugging it in and turning it on with.without the battery in and still nothing! Am I sunk?
I am hoping someone may have the answer... maybe I am overlooking something like a bone head? I really would appreciate any and all input. Thanks.
ight dude, been here with an iphone. first, do your self a favor and disconnect the new TS and replace the old one. did it work?
if yes, you have a problem, and it can be isolated to the new TS. if no, yu just did something wrong OR you shocked the mobo. Try not ot to do that.
Most likely though, it is a reassembly issue. I remember hwen i did this to my tilt, there was hell to pay and i thought i broke it. not so much. Just had a switch constantly being pressed in that shouldn't have been and didn't allow the device to POST.
Also, if you cna, how did you replace the TS part? i am about to do that to a Tilt2 and a touch pro 2 (same phone)
noticed that my touchscreen is becoming unresponsive lately so i thought that changing the multitouch might solve it. the thing is, after selecting 4 touch, touchscreen becomes totally unresponsive. i tried wipe and even flashing stock os but touchscreen is still the same.
did i screw up my touch screen? how will i know? any known repairs or fix.
thanks
Sounds like your digitalizer (the glass above the screen) is busted and needs replacement. If your phone is under warranty, claim it, if not - get a new digitalizer and if you can't change it yourself, take it to a repair shop.
Changed the digitizer but still no response
Got a headache? It's all in your head!!!
switch ROM
You said that you flashed back to stock, but how about flashing to another ROM, I mean one that has a completly diferent multitouch enabler... that might work.
kherzad said:
You said that you flashed back to stock, but how about flashing to another ROM, I mean one that has a completly diferent multitouch enabler... that might work.
Click to expand...
Click to collapse
i was able to flash stock and it means i have no root nor recovery. and adb debugging is not enabled. i am out of ideas how i will be able to solve this.
After flashing stock ROM do you face the same issue with a new Digitizer?
yes. doesnt respond to anything except volume and power. even the 4 touch buttons doesn't work. i was thinking that i have received a bad digitizer or it is a motherboard issue. with the latter i have no idea how to check
salingpusa said:
yes. doesnt respond to anything except volume and power. even the 4 touch buttons doesn't work. i was thinking that i have received a bad digitizer or it is a motherboard issue. with the latter i have no idea how to check
Click to expand...
Click to collapse
I had recently taken my Defy to a service center. I just wanted to change the earpiece and the side casing. While replacing the side casing (while removing the Digitizer) they damaged the digitizer. The main touch portion was working but the 4 soft keys were not. They replaced the digitizer and everything was fine again (had to pay for it )
If you can carefully handle the phone, you can open up the casing and try reconnecting the digitizer to the board. (Do not remove the digitizer from the casing only reconnect the cable).
Replacement is better done by a service center as it requires careful handing.
I did open the phone, removed and reconnected the cable, still the same. also tried 2 new digitizer still the same result. I guess it us the mother board . Any ideas where to get replacement board ?
Thanks
Got a headache? It's all in your head!!!
i have got the same problem like you and i have solved it.
Do compass calibration like spin the phone 3 times in flat condition (laying down face up), then have the phone standing up and rotate 3 times, then on one side, rotate 3 times and then move your defy in the shape of number "8" in the air. Re-open the screen. it is suppose to bring back your screen work like it was nothing happened.
only for my defy i've tried never did this for another but from what i see you have nothing to lose here
Tried the calibrating thing and also a new digitizer. doesn't work. So it is the motherboard.
Anyone knows where to get mother board
Got a headache? It's all in your head!!!
Getting a new board is like getting a new phone - new IMEI, price for the board should be very similar to the pricw for a new phone too. If you think about it, it IS the phone. What's there in the phone other than the board a screen and a digitizer...
Guess you're right.
Got a headache? It's all in your head!!!
This is my problem:
In may, I bought a Xperia Play on second-hand web from a guy on my city. In time, the phone got wet by rain, and digitizer started to go sometimes crazy, specially texting. I could survive with it.
After 2 months, the Ribbon Flex crashed, it showed screen completely screwed up, like in TV, you know, that problem that happen to everyone after sometime . So I changed it.
The point its, when i changed it, my old Digitizer stopped working ok, it gave too much problems. For 2 minutes it worked normally, except the base of the screen (that zone of the screen didnt detect my fingers, dont know why). Then, it wouldnt work totally, till, in some moments I took the phone, it would work for only minutes. I controlled the phone with the pad, but when it went out of battery by accident, I wasnt able to unlock again, as I couldnt touch and unlock the Pin code so I can use the phone again with the pad.
So I buyed a new one, which of course, I dont know why it doesnt work too (this replacement comes from a trusted dealer from my uncle electronics shop, so for the moment, I dont think the new digitizer itself its the problem).
What the hell Im supossed to do man? Im starting to go panic, because I dont know if the Motherboard have something to do with all this, and that means Phone dead right? Ive seem a lot of posts, all I could google with the same problem, and there is a lot of different cases and solutions with the damned Xperia Play, all starting with the damn unresponsive digitizer.
I saw the guide above amd i already posted there, but I wanted to leave a thread. Please, I need your help if its posible. Thank you at least for reading this.
Try replacing your flex cable again. Something like this happened to be, but the digitizer was completely unresponsive. After I replaced it, it works fine.
I bought my brother a second-hand M8. It had a cracked screen but it was really cheap. I put the new screen in and a new SIM card reader. Everything worked fine for months and out of the blue the screen stopped responding to touch. Everything else worked fine as far as I could tell. Even in TWRP touch was gone so I figured maybe it was a cheap screen or something like that. I took it apart and the backlight was falling apart. Ordered a new screen that had the frame with it to save time on reassembly and because the old one was a little tweaked. Same problem, ran the RUU from Windows, ran different RUU's from several threads via Fastboot. Ran the latest firmware package on Santods thread and still nothing. It has to be the motherboard at this point right? The display and digitizer cables go right into the motherboard and the only cable that looks replaceable goes up int the daughter board with the cameras and top speaker assembly. Am I missing something or should I just scrap this mess?
4/5/16: I have since purchased a used motherboard from eBay. This has corrected the issue with the digitizer not working. The SIM card will not be recognized now is the problem I am fighting with. It was giving me this issue before on the old phone but it was off and on. I got it to work once with the new motherboard installed. I have RUU's and everything. This motherboard is S-ON and I don;t want to waste another $25 on Sunshine if the problem isn't software related. I have also replaced the daughterboard and the flex cable as well as used a different SIM Card reader. I am out of ideas at this point.
Does anyone know if there is a way to make sure a motherboard from eBay will work?
No one has any idea?
In my case, as I took my M8 apart because of cracked screen and as I put it back together my M8 couldn't recognize my Sim and what helped in my case was that I've put a piece of thicker tape on my Sim just so it is thicker than it was and since then everything works flawlessly.
Hope this helps you,
Regards Talpes
Hi guys
I wanted to ressurect my old moto g5 (cedric xt1676) which i was not using for a longer time. Screen was cracked but touch worked just fine. I bought screen replacement assembly and connected it. Screen (picture) is working fine but touch is not working at all. Is there any way to solve this problem? What i found untill now is that after some update motorola/lenovo disabled support for 3rd party screens - one i bought is stated to be "original" but i doubt it.
I did a factory reset before removing old screen, after connecting new one, start menu was in russian (i can't read bukvas so its a guess ), after another reset it is back to english but touch is still not working. There is a padlock symbol in top left corner of the screen.
I just wanted to fix the old phone to give it to the family member but now i spent so much time on this issue that i want to fix it very badly.
Hope that someone can and want to help me.
At the end of the day it's all down to if the correct parts were used and if it was fixed correctly. Nothing we can really help with here.
It's Russian ransomware screen
Seriously always use OEM parts.
Make sure all connectors are intact; remove and inspect contacts. Make sure you didn't miss a ground or data connection; sometimes they are just contact points between assemblies. Using the wrong length screw may cause a missing contact pathway. Assemble exactly the way it was.
The mobo may have been damaged when the display was broken. High G impacts can internally damage chipsets and crack solder joints. Flexing a multilayered mobo can break internal traces.
Sorry to hear that. Anyway - i have nothing to loose so i would try with olderversion of android - is it possible to instal without working touch in the phone?