I‘ll really appreciate if anyone can explain or possibly fix the damage of the AMOLED display/screen on my Samsung Galaxy S8. The screen has a few odd characteristics after it was accidentally damaged by heat. (Because I put hot takeway food into my bag that has my phone in it.) The screen started showing the following problems after the accident.)
1) the screen has a permanent yellowish/greenish tint
This tint is visible even in the boot up device name & Samsung logo screen, so I don’t think it’s caused by software. This makes the colours on the screenlook less vibrant and less saturated.
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2) the screen cannot display pure black.
In the black background of pictures in gallery and especially while charging when powered off, it is easy to see that what’s black is now gray. (Refer to photos below) When the phone is off, the bezel and the display is the same black color. When the display is on, the grey color makes the top and bottom bezel of the phone visible. On all Samsung AMOLED display, the black part is not supposed to light up because it’s an OLED display, but now it appears like an LCD with backlight bleed.
3) always on display doesn’t work anymore and show something like a static screen during always on display.
(refer to the video:
)
The clock and home button doesn’t show and the screen will show that weird static effect slowly. (takes around 30 seconds)
4) the screen is unusable at 20 to 80% brightness
(refer to the video:
)
At 20-80% brightness, everything on the screen become blurry and any animation causes ghosting of the image. On a non white image, the display will form horizontal white lines across the screen, obscuring the content on the screen. Strangely, none of the problems occur when the screen is at 0-20% and 80-100% brightness, the display appears normal and perfectly usable.
(This is the dealbreaker that forced me get a new phone to replace this S8)
Looks like a blown driver(s).
Try clearing the system cache and a hard reboot but I doubt this will help.
A hard reset will do nothing.
I had sunlight + charging blow out the drivers on my S4+
$hit happens...
blackhawk said:
Looks like a blown driver(s).
Try clearing the system cache and a hard reboot but I doubt this will help.
A hard reset will do nothing.
I had sunlight + charging blow out the drivers on my S4+
$hit happens...
Click to expand...
Click to collapse
I was hoping that the display could be recalibrated for the brightness and color issues, but I don't know if the display itself or the driver embedded in the motherboard is physically damaged. Replacing either component is close to the resell value of a good condition S8, so I don't plan on doing that.
EddiePirate said:
I was hoping that the display could be recalibrated for the brightness and color issues, but I don't know if the display itself or the driver embedded in the motherboard is physically damaged. Replacing either component is close to the resell value of a good condition S8, so I don't plan on doing that.
Click to expand...
Click to collapse
I assume the damaged drivers are on the display assemby* but not sure if they're drivers present there.
It seems the logical place to put them though.
White papers for these devices seem nonexistent. There should be service manuals but I've never seen one.
Blowing out a display sucks...
* most likely fully integrated into the display itself.
Related
Caution: not-so-skilled people ask for help to more skilled friends !!!
How a proximity sensor works:
Basically there is a modulated infrared emitter and a correspondent IR receiver. When the modulated light is reaching the receiver, the sensor will become active.
In the mobile phones, the structure is built like in the below drawing. When an object is close enough, the reflected modulated light will be captured by the sensor and it will activate it.
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The problem in some phones is that for various reasons the sensor is hyper-sensitive. This should be translated to sensor becoming active when an outside object is even fairly far from the glass surface. But the problem is exactly the glass surface. The sensor is so sensitive it will catch even the refracted light from the glass (remember optics studied in school ?). Some of the light emitted by the emitter will be refracted from the very glass body back to the receiver.
The temporary fix was to "rub" the sensor area while in a call and suddenly the sensor was acting normally. This was caused by the fact that all that reflected light (from the finger) was supersaturating the sensor so, when obstacle was removed, the sensor was no longer hyper-sensitive, at least until the next power-up (next call).
The solution I tested (and apparently it works) is to create some sort of a light attenuator to place in front of the proximity sensor, but under the glass. Well .. the idea came to me while fixing an old remote control .
I'll let the pictures below to speak (thousand words for each ... pretty long story ) ... click on thumbnails for full 1200x800 size.
In case you are applying the mod, please leave a word here, so me (and others) will know the outcome.
I had not even a proximity misfire since I implemented this (roughly 48 ours ago) .
The opened phone (you will fond on the web lots of HOW-TO's about dismantling the defy):
The front case and the board - parts of interest:
Close-up:
Filler material :
"Attenuator" mounted:
View with the phone assembled back:
This seems really promising, I'll give it a try when I can find a suitable translucent material and post the results.
Sent from my MB526 using xda app-developers app
Very cool!
The proximity sensor is actually a part of the motherboard, interesting.
So in my case that my proximity sensor is broken and my LED is permanently on, the only way to fix it would be getting a new motheborad, in another words a new phone. Right?
Ok i dont have much light bleed from the edges of the screen, i dont have (so far) screen separation, but on the other side, i have one weird issue with the screen, this issue just started about 4 days after purchase. Now I see some light (you read well) coming in the form of two little filaments, very short about a quarter of an inch, separated by black, now these light filaments are on the left side of the screen about in the middle, But they do not show where the screen is, they are on the black bezel, in vertical fashion, aligned to the screen about halfway from where the screen ends and the side begins, right smack in the middle of the black bezel, i believe that is the right word.
My question is obvious, what could this be??? ps. i know it is light coming from these cracks or whatever they are because when i turn up the brightness these spost appear brighter as well.
I am not sure i have explained the problem too well, taking pictures might not help....this is my issue, im asking you all for you help..
Thanks
Daniel
I've had the same issue. Strange light bleed from underneath the black bezel under the screen:
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(This issue isn't visible in this photo. I marked where it is located).
Today i received my Nexus 7 from ASUS Repair Centre in Poland. They replaced the whole screen (LCD+Touch+Silver bezel) due to screen lifting. Now i don't have any lifting and this strange light bleed.
Did you resolve the light issue by sending the tablet to asus for the screen liftin problem? is it fixed now? could the light issue be a sign of a screen lifting problem in progress that is gonna manifest soon? i just dont know wether to think this is a big problem or a small one..
As I wrote earlier:
"Now i don't have any lifting and this strange light bleed." - after screen replacement.
danielreloaded77 said:
could the light issue be a sign of a screen lifting problem in progress that is gonna manifest soon?
Click to expand...
Click to collapse
No, I don't think so. That strange light bleeding was "out of the box". My screen started lifting after 1-2 weeks.
Hi there,
Quickly after installing a new screen protector sheet on my Motorola Defy, I discovered that it is causing my proximity sensor to be next to useless.
By peeling off the screen protector off the proximity sensor I verified the source of the problem. (The sensor worked properly without the protector sheet on it.)
I used a black permanent marker to mark out the proximity sensor area, to cut out a little window through the protector sheet with a knife.
Drum roll please, we arrive to the part where Newton got an apple to his head and Archimedes ran naked out of his house yelling "Eureka!",
The black permanent marker fixed the problem. once I painted over the proximity sensor (On the screen protector sheet of course!!), It started working fine again. Yeah. Weird.
Yes, Yes, I know, this is life changing information for many of us who just couldn't hang up after dialing the wrong phone number because of sensor problems...
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Cheers,
Shawn
wow.. epic fail on the part of the screen protector maker. did you bring this to their attention? good thing it has an easy, albeit, chinsy fix!
Long ago, I discovered something similar on the myTouch 3G Slide. That phone has a small rubber box cover over the proximity sensor, with a small hole for the sensor to peek through. When I changed the flex ribbon cable, the sensor wasn't working anymore. I eventually realized that on the old cable, there was that small rubber box over the sensor, & the new cable didn't have that. I put the rubber box over the sensor, & now it worked again. It seems that if the sensor is left wide open, it won't work right. I notice that on newer phones, the sensor is usually encased in its own little box in the housing. I guess they need most light around it blocked off in order to work right.
erikoink said:
did you bring this to their attention?
Click to expand...
Click to collapse
-nah, just a cheapie on ebay
This is a well known fix for the proximity sensor issues with aftermarket replacement iPhone glass that doesn't have dark enough tint over the sensor.. (cheap import products not oem) good to know it works in this case too.
i had a day or so to play with my xperia z1 and so far i am loving it
the weight and bezel size isn't that big of a deal as i thought it is very light
i peeled off the anti shatter film as it looks nicer without the sony logo (sadly theres a chance i managed to leave a very microscopic scratch with my nail as i tried to peel it off it took hours of trying untill i gave up and wen't with a needle instead which was extremely easy but it seems my nail managed to scratch a tiiiny part of the inside plastic i am not sure it can only be seen under a light and at a special angle)
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the screen is amazing with extremely popping colors unfortunatly the black level is beyond terrible and worse than anything i have ever seen before (turning down the brightness dosn't do much and anything other than maxiumum brightness is bad)
vieweing angles are also dissapointing
i am not sure if i got the right or wrong screen (screen lottery) but i notice NO green tint blue and red looks perfectly clear
speaker placement is awkward as i manage to block it when playing games not a huge deal but i would have preferd 4 speakers one on each side of the phone to use some kind of surround sound
theres also a weird thing that happened yesterday i used it then suddenly the screen turned black (showing a black picture) the phone was at this point entirely frozen i had to reset (vol up-power) which turned it off when i turned it on the screen was yet again black after like 4 min it finally showed the boot animation
now it takes about 4 min every time i start it for the boot animation to start
i also tried it's waterproofing (made sure all flaps were firlmy sealed) after i got it out of the water (i tried the speakers under water) the screen wouldn't work after i dried it off it still wouldn't work it pressed random buttons and was very unresponsive i had to restart the phone for it to work again (is this normal)
other than these two things i had no issues with this phone i am very happy with it battery life does seem weak though took about 4 hours i think for it to drop to 40% from 100%
zzcool said:
i had a day or so to play with my xperia z1 and so far i am loving it
the weight and bezel size isn't that big of a deal as i thought it is very light
i peeled off the anti shatter film as it looks nicer without the sony logo (sadly theres a chance i managed to leave a very microscopic scratch with my nail as i tried to peel it off it took hours of trying untill i gave up and wen't with a needle instead which was extremely easy but it seems my nail managed to scratch a tiiiny part of the inside plastic i am not sure it can only be seen under a light and at a special angle)
the screen is amazing with extremely popping colors unfortunatly the black level is beyond terrible and worse than anything i have ever seen before (turning down the brightness dosn't do much and anything other than maxiumum brightness is bad)
vieweing angles are also dissapointing
i am not sure if i got the right or wrong screen (screen lottery) but i notice NO green tint blue and red looks perfectly clear
speaker placement is awkward as i manage to block it when playing games not a huge deal but i would have preferd 4 speakers one on each side of the phone to use some kind of surround sound
theres also a weird thing that happened yesterday i used it then suddenly the screen turned black (showing a black picture) the phone was at this point entirely frozen i had to reset (vol up-power) which turned it off when i turned it on the screen was yet again black after like 4 min it finally showed the boot animation
now it takes about 4 min every time i start it for the boot animation to start
i also tried it's waterproofing (made sure all flaps were firlmy sealed) after i got it out of the water (i tried the speakers under water) the screen wouldn't work after i dried it off it still wouldn't work it pressed random buttons and was very unresponsive i had to restart the phone for it to work again (is this normal)
other than these two things i had no issues with this phone i am very happy with it battery life does seem weak though took about 4 hours i think for it to drop to 40% from 100%
Click to expand...
Click to collapse
Turn on the optimized back light option , it will solve the black screen issue at boot animation.
Sent from my C6902 using XDA Premium 4 mobile app
ImAnurag said:
Turn on the optimized back light option , it will solve the black screen issue at boot animation.
Sent from my C6902 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
i turned that off to get a better screen quality
dosn't it affect the picture quality?
but i will try will this do anything to the black level?
zzcool said:
i turned that off to get a better screen quality
dosn't it affect the picture quality?
but i will try will this do anything to the black level?
Click to expand...
Click to collapse
Not it doesn' affect but some effect on whiteness level on screen.
Turning it on removed the black screen issue from boot, try it once if you still get it turn it off again.
Sent from my C6902 using XDA Premium 4 mobile app
zzcool said:
i turned that off to get a better screen quality
dosn't it affect the picture quality?
but i will try will this do anything to the black level?
Click to expand...
Click to collapse
turn it on and then reboot ur prblm will be solved...after rebboting u can untick it again..but be sure that while rebooting tick it again
Sent from my iPad using Tapatalk - now Free
Hello! I had 1st gen nexus 7 laying around with smashed lcd. I ordered new one from china and changed it, but my new display looks faulty. I wanted to ask if someone had similar experience.
New display is split on vertical axis. and left side looks a bit darker. most visible is on white background
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sometimes there is a thin line seperating both parts.
line disapears if i switch windows or re- wakeup the device.
there is also a flicker on the left side when i wake up the device.
video:
http://vid224.photobucket.com/albums/dd199/dvc_05/BE61304C-4AE0-439A-A87E-B8E1E5411AE9.mp4
the dark and bright sides do not change when I turn the tablet around. display orientation changes but vertical split stays in the same place.
when I first changed the display and turned on the tablet it started to flicker like crazy and un-readable after few seconds of loading screen (google logo was fine and few seconds of spinning colored bubbles too)
I got it working only after full wipe/factory reset.
any chance the vertical split could be software issue? or should I return it?
Thanks!
njakts said:
Hello! I had 1st gen nexus 7 laying around with smashed lcd. I ordered new one from china and changed it, but my new display looks faulty. I wanted to ask if someone had similar experience.
New display is split on vertical axis. and left side looks a bit darker. most visible is on white background
sometimes there is a thin line seperating both parts.
line disapears if i switch windows or re- wakeup the device.
there is also a flicker on the left side when i wake up the device.
video:
http://vid224.photobucket.com/albums/dd199/dvc_05/BE61304C-4AE0-439A-A87E-B8E1E5411AE9.mp4
the dark and bright sides do not change when I turn the tablet around. display orientation changes but vertical split stays in the same place.
when I first changed the display and turned on the tablet it started to flicker like crazy and un-readable after few seconds of loading screen (google logo was fine and few seconds of spinning colored bubbles too)
I got it working only after full wipe/factory reset.
any chance the vertical split could be software issue? or should I return it?
Thanks!
Click to expand...
Click to collapse
Or you broke something when changing the display or the display is garbage
Typically this is from dirty, damaged or not fully seated connectors in my experience.
fwayfarer said:
Typically this is from dirty, damaged or not fully seated connectors in my experience.
Click to expand...
Click to collapse
+1 Exactly what I was going to say. If it were a faulty display, most likely the issue would be constant and on all views.