White Lines across my smart phone screen - Android Q&A, Help & Troubleshooting

One morning I woke up and the bottom half of my Samsung galaxy avant (SM-G386T) had a grid of white lines going across it. First time I restarted my phone it went away.
But they keep coming back and now it's more permanent, Sometimes it goes away briefly but they come back. I tried factory resetting. That worked the first time for a few hours but then it came back. and I tried it again and 2nd time there white lines where there during the factory reset.
The lines even show when I turn the phone off and charge the phone. So I believe this means it is w hardware issue
I tried taking the back planel of the phone off. I disconnected and reconnected the lcd connector latch on the left side. But the problem still persists. I haven't pulled up the screen with a suction cup. So Idk if there is a cable that could be loose on the front end or not. But Idk want to go buy suctions cup if I dont need to you.
Should note that I do have a good sturdy rubber case on my phone. but it has hit the floor a few good times.
One other thing that seems to aggravate or sometimes even make the lines go away is putting my phone to sleep and waking it up repeatedly or adjusting my brightness to max.
What do you guys think? is this fixable or do I need to replace the lcd screen.

man its simple
just press the wires of display which are providing it power & ur problem will be gone.
Its due to lack of sufficient current to display!!

Rustamveer said:
man its simple
just press the wires of display which are providing it power & ur problem will be gone.
Its due to lack of sufficient current to display!!
Click to expand...
Click to collapse
What wires are you speaking of exactly. cause like I said I have taken the back off and disconnected and reconnected the LCD flex cable but nothing changed. Are there wires behind the LCD I need to get to? which means I need to removed the screen with a suction cup?

Related

[Q] Streak 5 not displaying anything

So, being clumsy, I left my Streak in my hoodie pocket. Well, we can all see where this would end badly once I bent down to pick something up. I did, dropped my phone and cracked the screen.
I quickly went and bought a replacement glass + lcd display, and replaced the unit. But, upon turning the phone on, I noticed if I hit it a little too hard on one corner, It would restart, and the vibrator motor had ceased to work.
So I figured, hey, I'll just rebuild it again. So I took it apart. Looked through everything, took my time in putting it back together, because maybe everything wasn't fitting snug.
Now, When I turn it on, every thing is on, buttons light up, and the screen is lit up, but it is black. I never even get to the Dell logo. After about a minute the buttons dim, as if in idle. So i believe the phone still works, but maybe the connections on the MoBo is faulty? Any help would be nice, thanks.
check to see if the ribbons are snugged in place.
mofoahh said:
check to see if the ribbons are snugged in place.
Click to expand...
Click to collapse
I agree take it apart and chech your work. I had problens with my camera and flash. It was tge connector not being fully seated
Sent from my Dell Streak using XDA App
Well, I just took off the rear cover and reseated all 3 connections, pushed em in as smoothly and far as they would go. But, same thing. Black screen. But the LED is still working...
I'm having the very same problem. This is my second replacement screen and neither displays anything except black screen with backlight on, and the home + settings + back buttons remain lit. I can hear my phone starting up and receiving messages, but I cannot see anything. I've taken the phone apart and put back together five times between two replacement screens.
Does anyone know what ribbon cable might be at fault for this particular issue? The largest ribbon cable was shipped bent across the circuit board on both screens; there is a permanent creese in both ribbon cables, but I'm not certain this is causing the issue.
Any insight or assistance with this issue would be greatly appreciated!

[Q] Digitizer issues

Hello everyone. A few months ago, my phone screen broke, and I replaced it. Ever since then, my digitizer has been funky. When I turn my phone on the top half of the screen is static and the bottom half is black. It shows a bunch of moving parts (the boot animation) then goes black. It also prohibits me from using Amon Ra which is my favorite recovery because the whole thing is static. When I press the power button after the boot animation, my homescreen is on & my phone is fine. I broke my screen again (don't judge me lol I see you looking at me with that face ) and instead of putting ANOTHER screen on, I bought both the screen and digitizer already put together. So last night I lost all touch capabilities of my digitizer, when I did swype it did the mark of satan by itself (possessed rezound?) and overall was just terrible. I opened it up, cleaned up the ribbon, put it back, and 95% of touch worked. Did the same thing today and 100% works, however, I still get the weird static-turn-on thing. I assume it's the ribbon port for the digitizer..so my question is, is it possible to clean that? I was thinking with a really soft toothbrush w/ alcohol on it but I don't wanna ruin my phone for good. Thanks in advance
ParagonXI said:
Hello everyone. A few months ago, my phone screen broke, and I replaced it. Ever since then, my digitizer has been funky. When I turn my phone on the top half of the screen is static and the bottom half is black. It shows a bunch of moving parts (the boot animation) then goes black. It also prohibits me from using Amon Ra which is my favorite recovery because the whole thing is static. When I press the power button after the boot animation, my homescreen is on & my phone is fine. I broke my screen again (don't judge me lol I see you looking at me with that face ) and instead of putting ANOTHER screen on, I bought both the screen and digitizer already put together. So last night I lost all touch capabilities of my digitizer, when I did swype it did the mark of satan by itself (possessed rezound?) and overall was just terrible. I opened it up, cleaned up the ribbon, put it back, and 95% of touch worked. Did the same thing today and 100% works, however, I still get the weird static-turn-on thing. I assume it's the ribbon port for the digitizer..so my question is, is it possible to clean that? I was thinking with a really soft toothbrush w/ alcohol on it but I don't wanna ruin my phone for good. Thanks in advance
Click to expand...
Click to collapse
Use what i do for computers. Take a new pencil, never used eraser, and use the eraser to clean the connectors. take q-tip with alcohol. brush across it, and fan it dry. about 2 minutes is good. Alcohol dries pretty quick. Hopefully this works for you.
I have been having some problems as well. I replaced the digitizer myself and the phone boots up completely fine and normal. I just have some "dead" spots on the digitizer which I cannot seem to calibrate. I have tried apps and everything. Is there anything I can flash through recovery?
Has anyone come up with a fix for this?
Thanks in advance.

Problems after battery replacement

Hi there xda.
I gave my phone to replace the battery. To a service that claims they know what they do. Everything was looking good after I got the phone back after an hour.
I left the city so I got to use a satnav and after a while I've noticed a yellow splash on the bottom left of the LCD. It gets more yellow when the phone heats up, and gets less yellow when it cools down, but it's still visible.
I decided to take it apart and the yellow splash/dot immediately disappear.
I've returned to the service but they ofc claim they did nothing wrong.
So I've got a question for you guys, what could they do wrong. When I took the phone apart, I've noticed a curbed cu metal plate over the battery, and got nothing under the battery, between the battery and the lcd. Sth should be there to isolate the battery from LCD or what?
Any help would be appreciated.
Thx in advance
tapatalked
feels bad for this brother. That may b because they hit the screen with a punch aur may b it Being pressed hardly.. even it may b they replaced your screen with old or used one rather than battery
well, the screen looks like the same, the glass has the same scratches.
so if they pushed it to hard or sth, there is really nothing i can do.
rajman said:
well, the screen looks like the same, the glass has the same scratches.
so if they pushed it to hard or sth, there is really nothing i can do.
Click to expand...
Click to collapse
Hi, it may be that they damaged the flex cable for the screen, since my cellphone also heats up but the screen is ok .
Optimus said:
Hi, it may be that they damaged the flex cable for the screen, since my cellphone also heats up but the screen is ok .
Click to expand...
Click to collapse
it might be that it gets a bad display after it heats upa a bit, i'll try to add some copper by myself to isolate the heat between battery and screen/cables

S6 Edge 925I LCD TROUBLESHOOTING

so i left my s6 edge wireless charging and then the next day phone had vertical pink/green lines in the the middle of the screen, odd thing is that if i press the front camera part it change the lines color, also display wont show at startup, and sleep/wake problem, sometimes have to wake/sleep couple of time to make display works, so, is it hardware related or could be software?, i did a factory reset, havn't tried flashing or checking if there is a loose conection but i want a second opinion. any idea?
Gruning said:
so i left my s6 edge wireless charging and then the next day phone had vertical pink/green lines in the the middle of the screen, odd thing is that if i press the front camera part it change the lines color, also display wont show at startup, and sleep/wake problem, sometimes have to wake/sleep couple of time to make display works, so, is it hardware related or could be software?, i did a factory reset, havn't tried flashing or checking if there is a loose conection but i want a second opinion. any idea?
Click to expand...
Click to collapse
I had the same issue as you did but it was a pink line that ran down from the notification light. I had to press the notification light to get it to go away. I took my phone to a samsung repair shop near me and they fixed it for free and i had my phone back the next day. Ou might have to use warranty claim if you dont have a. Samsung service center near you.
Gruning said:
so i left my s6 edge wireless charging and then the next day phone had vertical pink/green lines in the the middle of the screen, odd thing is that if i press the front camera part it change the lines color, also display wont show at startup, and sleep/wake problem, sometimes have to wake/sleep couple of time to make display works, so, is it hardware related or could be software?, i did a factory reset, havn't tried flashing or checking if there is a loose conection but i want a second opinion. any idea?
Click to expand...
Click to collapse
Its not software related. The problem is the display. Maybe a connector problem or the display itself. If u are in warranty u should get the screen (or phone) replaced. Got the problem myself a few months ago, a pink line on the right side of the edge screen. I do repairs for a living so it wasn't hard for me. The connector of the display is on the right top backside. (seen from the front lying on its back)
So when u press top right u probably press also on the connector a little. It solved my problems for a few min/hours or sometimes days.... But in the end it keeps coming back so i replaced the screen and all problems are gone.
Alright, thanks guys !

False battery flat power off

Hi.
My z4 lte has recently started shutting down without warning after displaying the flat battery icon. This happens even if the battery has over 80% charge. The tablet reboots normally if left for a few minutes and on restart will show the same battery level as before the shut down. This is happening more and more frequently.
Any ideas or suggestions?
Thanks.
thintin said:
My z4 lte has recently started shutting down without warning after displaying the flat battery icon. This happens even if the battery has over 80% charge.
Click to expand...
Click to collapse
This is definitely a defect battery. Have the same problem on my tablet Z4 and before already twice on Xperia Z1compact. The phone battery was replaced the second time now. With new battery no problems anymore. (seems to last arround 2 year, then it starts again. Looks like poor battery management by Sony )
Only solution: replace battery!
Sadly the only way is by disassembling the display:
https://de.ifixit.com/Anleitung/Sony+Xperia+Z4+Tablet+Repairability+Assessment/79131
Did anyone managed this successfully without breaking the screen? I replaced a broken screen on my Tablet Z and its true, they are really delicate and new screen is ~250 Euro! (Battery ~50 Euro incl. glue).
(By the way: the Tablet Z battery is still fine, and even if, it would be accessible through back cover. Was really the best tablet by Sony. @Sony: WHERE IS THE SUCCESSOR of TABLET Z4??? How about skipping at least once this useless "every 6 month a worse phone" cylce (XZ2: :crying: :silly: ) and develop instead a new tablet!? )
allofmex said:
Did anyone managed this successfully without breaking the screen?
Click to expand...
Click to collapse
Since my battery became almost unusable, I took the risk to replace battery myself.
And it was successfull!
Here some hints:
First of all: Make sure you have good tools, mainly:
Only use a very thin and a bit flexible opening tool (I used iPlastix tool, the plastic version)
Use a good heatgun with small opening adapter (< 1cm). Make sure the heatgun can be set to low temperatures, I strongly suggest one that can be set to exact values (In my case "Steinel HL 2020E", can be configured from 80 degree upwards in 10 degree steps)
Build yourself some kind of stand for your heatgun that you can heat the display while having both hands free (I used a small camera tripod and tape)
If you do not have ordered the new adhesive yet, use a internet photo of it to see where the adhesive is located and how deep it reaches. (the edge where adhesive does not reaches edge is headphone jack). Choose a spot with thin adhesive (not an edge) to start.
Heat up this spot (in my case: heatgun on 90 degree celsius, 5 cm distance from outlet to surface) and while still heating, carefully insert opening tool. Do not use force, heat longer if needed. Than slowly move around the tab by heating and dragging your tool. (here the mentioned stand for heatgun helps a lot). After you opened some way, insert a thin piece of platic to prevent adhesive from reattaching.
Again: NO FORCE. When old adhesive is warm enough, you can easily "cut" it with your tool. If you still feel resistance, you need to heat more. (on spots with larger adhesive areas I switched to 100 degree). When you are around, the display should be able to lift, if not, heat again remaining spots and use opening tool until screen can easily be detached. (never bend/pull) There is not adhesive in middle of display, only at corners as you see on new adhesive.
The opening itself was surprisingly easy. More annoying was to remove the old adhesive remainings. I tried isopropylalkohol, but it did not help much. Most of it was removed with some plastic blade, mooving/scratching/pusching permanently against the end of the adhesive trail. It takes time, but it removes it in 0.1 mm steps (maybe someone has a better idea).
Make sure that you work on good mat/base that you can put force without bending screen. I had some sticky but flat remainings on display surface, but this should not be problem.
Removing battery adhesive: use colored edge of pull tab ONLY to grab it. As soon as the white part gets visible drag always on the part that is just coming out behind battery. The first tab teared for me because I did it wrong and it was difficult to remove the remaining. The second tab could be removed completely with ease. (How to detach the cabling, see the youtube teardown videos)
At this step I suggest to replace the main camera lense if the lense coating is broken (as usually on Sony ). Do not remove lense from inside, only the round part gets replaced. Heat up lense and push from inside outwards! (see attached photo)
Replace pull tabs and battery, reconnect cable and TEST tablet before attaching new adhesive! (you may use sony test menu by calling *#*#7378423#*#* in phone app)
Another tricky part is to apply the new adhesive. You have only one chance, as soon as the adhessive touches a surface it sticks, if you try to detach it again it will stretch and stay stretched, so better don't try. Seems the adhesive has to be applied to display first, so detach cable of display, test carefully how to hold and handle before removing plastic covers of adhesive and then: good luck... (Result was "almost" ok in my case. If result is tolerate able, keep it that way. Trying to change again will just worsen the result. Cut parts sticking out display edges)
Reconnect remaining display cable, test functionality again and glue the other side.
Congratulations, you got 2-3 years more of tablet lifetime. Lets hope the guys at Sony get it done to bring a successor until then...
I succeded open my tablet and replace battery.
Now it does not power up.
The red led is lighten up, blinking 4 times, ligten up again and the went off. Repeating again and again after some while.........
I cannot get in touch with the tablet again. I cannot see anything broken or destroyed by open it.
Is the led an error code?
Is there any reset button hidden somewhere?
Sorry to hear ?
Did you tried hard reset? (Press Volume up + Power for more than five seconds)
What happens if you boot to FastBoot, does USB connection shows up on computer at least?
Is device charging?
Is screen backlight starting? (Try in dark room, you should see at least a little lightning if backlight switches on)

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