Smartphone display touchscreen replacement short - General Questions and Answers

A couple of days ago my Oneplus 5T wich i have had for about 3.5 years stopped responding to touch input. The display was still working.
I ordered a new screen online and replaced it with the old one. But still, nothing changed and I was unable to use the touchscreen.
After some research online and here on XDA I found out that it might be a bug with the software, and I should be able to use my phone again after resetting (unbricking) it.
I also brought the phone to a local repair shop, and they told me, I did not unplug the battery during repair, and therefore something shorted and I broke the new display.
I did unplug the battery, but its still absolutely possible the connector connected itself back in on accident (while i tried to press the new display in).
Is a short like this actually possible? Is it more likely that the new screen was already broken?

Related

[HTC Universal] screen fried

hi all,
yesterday i got an aftermarket, all purpose usb charger that could charge my iphone, my htc, my zune and my bluetooth GPS device (easier to carry one charger for all)
i put my htc on charge overnight, the way i usually do, but when i checked it in the morning, the screen was not responding to touch. the screen was fine and i could do the navigation thru keyboard, just no response on touch...
the screen wasn't burnt or damaged in anyway from any side, neither was the device hot.....
my charger specs are 5v / 1.5 amp output....
i suspected a software issue, and hard-resetted as well, but no use!
any idea if the charger (amp rating) could be responsible for the damage?
thanks,
Farrukh
http://bytesizer.blogspot.com
Same problem i'm facing . . . . .
Is there any solution to it ?
i had the same problem a couple day ago, sounds funny but
i've put it i portrait mode and just hit my left hand with my uni and it started working again,
btw check is there any dirt on the edges of the screen, try cleaning it
or go to align screen and tap every point of the screen to see if the cross moves
It is an interesting problem in a sense that it is sudden. Usually digitizer failures and loss of touch sensitivity happens over a period of time. The only time it can happen suddenly and completely is when the digitizer gets ripped off at the connector or comes loose over time. Doubt the charger was responsible. You have an intermittent (or permanent) digitizer failure. Try re-flashing ROM to exclude software corruption issue. If all fails - replace the LCD+Digitizer.
IN CASE EVERYTHING ELSE FAILS. I know it sounds extravagant to replace both, but unless you have a specialised equipment and/or are capable of flex soldering, I suggest purchasing both in one unit. Can either go new, in which case I suggest cnn.cn as one of the cheapest sources for Dopod D900 (which is the model you will be searching for on that site, no others will be available) LCD+Digitizer combos or... purchase a cheap failed second hand unit with good screen.
The replacement is a fairly straightforward job if you are capable of following the instructions precisely. The instructions can be found in a Service Manual floating somewhere on this site.

HTC Touch Pro gone black!! (Problem)

Greetings!
Today my phone dropped of the desk and closed...i powered it on again vibration was working but screen was black!I tried my old lcd same thing...
For what part should i search t find or it's pointless...??
probably a hardware problem,the clue that the software works that it vibtrates,ry and buy a new scren or go to a shop to fix it
I've change screen i tried my old one(touch(digitizer) problem)..so i think this ( cgi.ebay.co.uk/Keypad-PCB-Flex-Cable-HTC-TOUCH-PRO-T7272-/320597490986?pt=UK_Mobiles_Accessories_RL&hash=item4aa5197d2a ) will solve the problem...
PS: Cant post link cause of forum restrictions.
Hello Dimgr
I lost my Touch Pro last month ( MB gave up) other part are perfectly working. As HTC service center said MB is gone i got courage to look inside deeply.
Therefore i can can the link is NaviCap assembly which is noway handles screen.
What i can guess i could be BD Slide
I though it would be that cause the screen connects with navikey.My phone hit the floor with the screen and keyboard was on!(i cant explain it sorry for my bad english :/) Any other suggestions??I dont want to rip my phone .
Just one day my TP stopped responding to touch, everything else working.
After few days screen went black, but phone was starting Navi key were glowing while charging, even phone was getting detected by PC.
I gave my TP to HTC service center they said Mother Board has gone & it was costing almost a new phone.
So i decided to sale the parts.
I sold Navi key to one of member on this forum only & its working perfectly, this confirms my doubt that Navi key is not the bug in your case as well.
Three things could have happened.
1. The best scenario is the jolt from the drop just dislodged the ribbon cable connecting to the screen. Resolution: Reseat ribbon cable on screen and on body of the phone (requires to open the phone)
2. The screen simple is busted and needs to be replaced.
3. The motherboard got busted and needs to be replaced.
1. The phone is open i even tried another screen all ribbon cables are checked :/
2. The screen seems to be ok... I dont think that both screes are faulty!!!
3.R.I.P. Htc touch pro...
My situation was same & HTC service center concluded that motherboard is gone.
So i believe your motherboard is also gone & this means there something which stops working after physical.
Because after my phone stopped responding to Touch i gave some shock with a hope that it may help in case of loose connection, but next day screen gone black.

Hard-Bricked Hammerheads thread

My Nexus 5 died on me.
A few days ago, I woke up and connected my phone to the charger and went on with my daily routines. And when I checked the phone after half an hour, the phone was completely off. I tried to turn it on and tried all the key combinations, the phone showed no response at all; no Google logo, no bootloader, no TWRP, the screen was just completely off. I thought that it was the battery's fault as the phone was almost 2 years old and had been showing signs of depreciation. It doesn't even show anything even when I connect it to the charger, instead it heats up a lot during charging. So I took it to the service centre and the guys at the service centre told me that the motherboard had got fried and the only solution is to get a new mobo which costs 13,500 INR (200$). But, I don't want to spend that much fixing this device, I think its better to buy a new phone. I am planning to get something cheaper than the Nexus 5 with a not bad specification and good dev support (thinking about Moto G 3 and OPX).
Three of my friends also had bad experience with the Nexus 5.
One friend had the same issue, the phone died one day without any apparent reason. He is now using a YU Yuphoria.
The other two friends' phones just started bootlooping one day. Both those phones were not even rooted ( not the power button issue, they also had to replace the motherboards, but luckily their devices were under warranty back then, so they got it replaced for free). I think LG used cheap low quality components to make the Nexus 5.
What do you guys think could have caused this problem?
I had the same issue. I received a Nexus Device from a friend with a faulty wireless card. I know it was faulty because when I could get it turned on, it would never turn the WiFi adapter on.
What I did to fix it was, I ordered a broken Nexus off ebay. The screen was cracked and the guy tried replacing it but he f'd up the internals somehow. I swapped out the mother board which was easy and flashes stock Marshmallow and haven't had any problems since.
goku14238 said:
I had the same issue. I received a Nexus Device from a friend with a faulty wireless card. I know it was faulty because when I could get it turned on, it would never turn the WiFi adapter on.
What I did to fix it was, I ordered a broken Nexus off ebay. The screen was cracked and the guy tried replacing it but he f'd up the internals somehow. I swapped out the mother board which was easy and flashes stock Marshmallow and haven't had any problems since.
Click to expand...
Click to collapse
But that's just a small issue compared to mine :/.
Still a sign of cheap components.
yzak58 said:
But that's just a small issue compared to mine :/.
Still a sign of cheap components.
Click to expand...
Click to collapse
Same thing would fix yours. If you buy one with a broken screen then just swap motherboard it would be cheaper than buying a mb replacement. I have the opposite issue with my wife's G2, motherboard is ok, but everything else, screen, battery, toast.

Google pixel screen demains black but still responds

Hello guys,
I got a problem on my Google Pixel out of nowhere. I turned it off a few days ago and when trying to turn it on again a few hours later it did not work.
Nothing happened whether it was plugged it or not so I thought the battery was faulty.
I ordered a new one and changed the battery. Now the phone turns on but the screen remains black (I can tell it's turning on because it vibrates).
The screen is black but is still responsive, I can still (with difficulty since I don't see anything) enter my pin code and then answer calls, receive messages and so on.
It is also worth mentionning that it seems to work the same with the old battery which I thought was faulty (I am 100% sure it wasn't vibrating before I changed it the fist time because I tried for two days before ordering the new battery).
Do you think replacing the screen would be enough or could it be another issue ?
Thanks for your help.
Kargrim said:
Hello guys,
I got a problem on my Google Pixel out of nowhere. I turned it off a few days ago and when trying to turn it on again a few hours later it did not work.
Nothing happened whether it was plugged it or not so I thought the battery was faulty.
I ordered a new one and changed the battery. Now the phone turns on but the screen remains black (I can tell it's turning on because it vibrates).
The screen is black but is still responsive, I can still (with difficulty since I don't see anything) enter my pin code and then answer calls, receive messages and so on.
It is also worth mentionning that it seems to work the same with the old battery which I thought was faulty (I am 100% sure it wasn't vibrating before I changed it the fist time because I tried for two days before ordering the new battery).
Do you think replacing the screen would be enough or could it be another issue ?
Thanks for your help.
Click to expand...
Click to collapse
Have you dropped the phone? not like the ribbon cable connecting the screen to the motherboard could be loose and needs to be reattached again? just a guess though..
Arju said:
Have you dropped the phone? not like the ribbon cable connecting the screen to the motherboard could be loose and needs to be reattached again? just a guess though..
Click to expand...
Click to collapse
Hello Arju,
No I didn't drop it.
Since I had to take off the screen to change the battery I had to unplug the ribbon cable. When putting everything back together I tried many times to unplug/replug it without success so far. (I did not glue it back yet to the case so far so I still have access).
Moreover, since the touch screen is working I am guessing it has to be attached correctly.
Thanks for your idea anyways.

Moto G5. An input line of keys are not selectable on the phone. All other keys work.

Hi
My son recently gave me his old Moto G5 phone. The phones charging board was broken and the screen was very badly cracked all over (it had a screen protector) and was generally not in the best of condition.
My son had bought a replacement screen several months ago, but had not got around to trying it. The battery was also totally flat.
So he gave me the phone and I installed a new charging board and the new screen and charged the battery.
Unfortunately an area of the new screen does not respond to key input . This area is a line of keys towards the bottom of the screen (not the bottom though).
My son says that he had not noticed any such problem when he last used it (he kept using it until the battery went flat; he then purchased a new phone).
I've tried doing a factory reset. I've removed and re-connected the display cable onto the main board and these have not fixed the problem .
I am not sure what to try next :crying::crying:. I could purchase yet another screen in case this new screen has a fault (probably unlikely?).
Presumably it could be the main board (digitizer?)...How can I find that out?
Maybe I have done something wrong on the install, but seems odd that the rest of the screen (as far as I can tell) works ok. What might I have done to have caused this problem?
Has anybody got any useful tips as to what I could try. Seems a waist of a good phone, not to try and repair it.
Thanks for reading this.

Categories

Resources