Xiaomi Mi 9T Pro - Dead Screen - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hi!
I'm here to figure out if someone can help me.
I was using my phone normally, I was trying to unlock it when the screen flashed like 3 times with a blue color similar to the color of the screen when you are trying to unlock the device, it happened like three times, then I rebooted the phone and the screen is black and unresponsive. I can tell that the phone is working in the background because I can feel the touchscreen working, it's also charging, ringing and I can even answer phone calls, it's also connected to my Wi-Fi network, the phone is not damaged and I haven't dropped it recently (a few times some days ago but nothing serious). I'm wondering, is the screen dead? or maybe something's loose on the inside?

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Problem - no display on my Xperia

I have lost my display on my Xperia phone.
The back light comes on -- but that is it -- NOTHING else.
Has anyone else experienced this and more importantly - fixed it ???
if so, what did you do
What have you tried to fix it? I'd say something like this goes in order;
1. Soft Reset (since you don't have a display, use the reset button next to the battery)
2. Hard Reset (hold both hard buttons while pushing the reset button with the stylus)
3. Call someone, either your carrier or SE.
I have the same issue.
About 2 weeks ago issue started.
Waking from sleep or turning on, backlight lights up, but screen is blank.
This is starting to happen more frequently. Sometimes it will work normally, but more and more it is just staying blank.
Also during normal use, screen will become "garbled." Random bits of the screen move around to other parts.
Even during these problems the phone is functioning normally, can even push the buttons on the touch screen even though they are not being displayed.
I have an x1i, hard-spl. Was previously flashed with TouchX 10.1. When issue started happening, I flashed with a newer itje WM6.5 ROM. Same problem.
Issue of screen being blank also happens when booting to the tri-colour screen.
Any ideas?
I had the same issue screen just refused to display. I sent it back to Sony E for repair. They repaired and returned within 7 days. On the repair bill they stated it was a loose connection.
Interesting, hopefully that's it.
Out of curiousity, what was the repair worth?
Just wondering how much i'm up for if that is the case and I send it back.
lonneclark said:
I have lost my display on my Xperia phone.
The back light comes on -- but that is it -- NOTHING else.
Has anyone else experienced this and more importantly - fixed it ???
if so, what did you do
Click to expand...
Click to collapse
Yeah.. I know this topic is pretty old, but I exactly have the same problem..
I have the Xperia X1 or about 1 year and a half now, everything was working fine until 2 days ago:
1. If someone calls me or I call them, they don't hear me, but I DO hear them
2. Screen responds, but remains blank (backlight only turns on)
3. Screen shows once in a while, but it pixelates.
I'm thinking of a hardware problem here, anyone knows more about this?
- Tried rebooting > no effect
- Tried soft reset > no effect
In most of all above problems it would be becouse of damaged lcd flex cable. It's not cost too much but you will have to disassemble phone and change it. http://cgi.ebay.co.uk/for-Sony-Eric...ries_MobilePhoneBatteries?hash=item563a472301

[Q] Problem-Display suddenly turned fade colrs with multiple horizantal black line?

Hi i got samsung galaxy s 1 month back ,today when i am browsing widgets from main screen Display suddenly started to show fading colors with multiple horizontal black line and phone is hanged,i waited for few seconds hoping it will return to normal but continuously all colors lost slowly with white screen and multiple black lines.then i removed battery and restarted after which display is fine with no problem.
so anyone experienced similar problem and what should i do if it happen again?
Thank you!
Hey mate,
I had the same problem with an I9000 international a while back, it was a hardware fault and the phone was replaced by my carrier. (at least that is what they told me)
Sorry for the bad news,
Alex
Now,My phone is workinkg fine!
By the way how many times you had this problem? After this problem ur phone is dead or worked after restart?
Today when i pressed side key to turn on display there are three white lines on display when i drawed pattern to unlock phone lines disappeared!
this is hardware problem? should i go to customer care?
Hi again,
My phone did it intermittently when i was using it, not just on certain screens, it was almost random. Sometimes it would work perfect for 2 days then just have the same problem you described.
My RMA sheet from Samsung said:
Tested Main PCB
Tested Display
Handset Hardware fault
Replaced Handset
Passed live air tests
Passed stress test
So based on the above, my phone was ratsh*t

[Q] Phone works, screen does not yet sometimes it does

Hello
One night I was using the phone without doing anything special , some video watching . Phone went dark, tried to reboot. Blank Screen and the capacitive buttons flash. Left it to charge all night, in the morning it started but after I pressed the lock button blank screen but phone still working and receiving input.
Took the battery and SD card out left it for 30 seconds then started it again, Stuck at LG logo. Repeat , phone started ... Pressed lock button once then again to unlock , screen wouldn't start.
Used LG Mobile Update recovery tool to restore it ... Didn't solve problem. Sometimes it does not even start , just flashes buttons, other times it does without screen and last all works even the screen until first time goes dark , in the last two cases I can use LG On-Screen Phone without trouble, in doing so I installed a proximity sensor test app to see if it was causing my screen to not come back on , the sensor looked fine.
Facts:
1. Two day old Optimus Black p970, worked like a charm until stated problem
2. The app that checked proximity sensor showed the sensor to be free when my hand wasn't on it
3. The warranty laws in my country are idiotic so I would do or buy anything rather than send it so they can give me a new one in 3 months.
4. Tried another battery from another Optimus, fully charged nothing different.
5. Stock rom.
Do any of you fine people have some ideas on how to fix this? Thanks in advance
Hi there...
Sometime ago [1 year and a half or so~] I worked at a cell refurbishing facility [there were samsung, motorola and palm devices from sprint] and that problem you have was quite usual. Blank screen, still the phone is somehow usable like reciving calls...
There's this thing called "flex" which is the connector between board and display and that is what we fix, most of the time not even "fix it" just getting it in the right place...
This happen because of excesive use in those sliding or clamshell devices, in OB could be for overheating, you could try to fix it yourself or pay $20 usd [that's what it cost here]
Would that connector explain the fact that sometimes it doesn't start at all? hmm I am thinking now and I guess if it moves and somehow the phone feels it has not display connected it could fail to start... Anyhow thank you
actually yes, it could be only for the flex [some devices don't start at all when not having display or keyboard if there's any] but since our OB is not sliding nor clamshell type probably was overheating.
you say you have stock rom, well now I'm using CM7 but when I was at stock and after using the phone a few minutes it felt warm and some more minutes [like playing gunbros where you need to use both hands and a lot of movement] it was really hot and had to stop playing for a while.
what I'm trying to say is that because of overheating flex could have moved, but because of overheating too may have move something else, you couldn't belive the huge number of micro-things that reside in the board.
so if it's only the flex, it's an easy task to do, just unplug and plug again, but if it's something else it's quite hard to know just looking at it, you need to do some electric measures and stuff, the recomendation is to take it to a tech center or something
Hi. I Have same issue. Two times when i press power buton, butons flashing and screen still black. Phone not responding. I must remove baterry.
Sent from my LG-P970 using Tapatalk
Hi there, got the same problem too with my optimus black. Screen goes flickering, shut down don't do any good, and the phone temperature is kinda hot. But in my case it work after I clean some cache and data in the phone storage through LG OSP. After that, the phone temperature back to normal and the phone screen back to normal also. I believe that in my case the phone is overheated.

Screen not working

Hello,
I have sent my gnexus off to be repaired this week and recently started to use my old milestone until my other phone is repaired. Phone was working fine, a little slow to my nexus but it was better than nothing. I was checking my emails and stuck my phone in my pocket to cross the street, when I pulled it out again, the screen would light up (glow) but the screen was black, I tried pulling the battery and rebooting but to no avail. I can feel the phone vibrate when I slide my finger across to unlock it and tap icons, but nothing is being displayed. I'm wondering if anybody else has had something like this happen and if it is possible to fix relatively easily?
If you don't get anything on the screen anymore I'm afraid it's a hardware failure.
Maybe the connector cable is broken (partially), I guess...
I guess Eiertschik is right.
In the boot process, does the M logo show up?

Black Screen

Hello all, so recently I dropped my phone from a decent height, but it worked fine that night, and even the morning after, didn't even crack.
It started acting weird and going black when I would swipe down my notification menu, and I'd have to restart the phone each time, but if I got rid of those notifications it would work alright for a couple of minutes and go black. After restarting it a few times the Samsung logo didn't even show up anymore and the display hasn't come on since then, even in recovery mode. I can hear it booted up, and have even plugged it into a DeX dock to use it, and that works fine, even the touchscreen, just no display. I've flashed the latest software onto it using Odin, and still nothing.
So, my question here is: Could this possibly be a software issue? Or does it seem more like the display was damaged in some way or another, (or even possibly came disconnected from the motherboard?)
I appreciate you reading my post, and wish you all the best,
Briggs

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