[Q]Dust or Dead pixels ? - myTouch 4G Q&A, Help & Troubleshooting

How can i tell the difference between them , i have a few little dots on the top left of my screen i notice it when i turn the phone on and also when the screen is off.

If it's in the top left, that's likely dust. That's a problem area in HTC quality control for this device.
Also, if they are there when the screen is off then its' certainly dust.
Dead pixels do 1 of 2 things. They either don't work at all so they are black when the rest of the screen is on, or they stay 1 color constantly lit so they are lit when the rest of the screen is black (not off)
If the screen is powered off, even dead pixels don't stay lit.
Also, dead pixels aren't nearly the common problem they were on LCD screens just 5-7 years ago. I remember going through multiple computers monitors once trying to find a good one when LCD monitors first became affordable. It was a nightmare.
Now...you can buy $1000 big screen LCD TV's and not even worry about it.

Anyone ever come up with a solution to the corner dust problem. I have a patch about 1/2 inch by 1/2 inch in that corner and it's so thick I can't see the notifications in bright sunlight. I'd rather not take it apart and wondered if a powerful vacuum or something might work?

Most people send it back in for a replacement

Very simple - if you can see something even when display is off then its dust else dead pixel.

Related

Lots of dead pixels

Hello everyone,
I just booted up my Hero, and I noticed more than 6 dead pixels.
I used these unstuck applications but didn't seem to work...
They only appear when in black, so they ain't that big of an issue but do you think I should send it for repair?
Thanks
Definitely.
I'd send back a 1920x1200 PC screen for less than 6 faulty pixels... it's completely unacceptable for a 320x480 screen.
Dead pixels won't show on a black screen. I'm assuming you mean possibly hot pixels on the boot screen. They're probably specks of dust.
http://forum.xda-developers.com/showthread.php?t=554288
I agree with Switchbitch dead pixels will always been seen the color will be always wrong and not only when its black. still its intresting how dust get up there.
Switchbitch said:
Dead pixels won't show on a black screen. I'm assuming you mean possibly hot pixels on the boot screen. They're probably specks of dust.
http://forum.xda-developers.com/showthread.php?t=554288
Click to expand...
Click to collapse
Well no, they appear after boot screen, too. For example in Market/Settings or wherever black color is.
ZenorGR said:
Well no, they appear after boot screen, too. For example in Market/Settings or wherever black color is.
Click to expand...
Click to collapse
What color does the dead pixel show is it red??
Yeah I think so. I just tried to shake the phone and it seems that they are gone or whatever. But now I can clearly see a dust piece which is white. So I suppose the gap does exist at least in my phone.
Not annoying but oh well... if it gets filled with them I would need to send it for repair.
Does warranty fill these kind of issues?
I might have the same problem but it is no dust or hot pixel but the space between pixels.
It seems to me the film layer wasn't cut properly in the factory with the result that backlight shines between the dark pixels.
It isn't dust because there is no sidelight to light up dust and the spots are shining very bright white so the light definately comes from the back.
Furthermore my screen fits fine into the casing.
Maybe it is because I always have the brightness at full I notice it more than others. When I run Spark in classic mode or Draw! you get a complely black screen to test it... a pixel-test program is an option also.
I noticed it in the beginning when 3 positive-dead pixels where so very small they could not be hot pixels. Now, one month after the begin of use it has grown to about 9 of them but they are so very very small that I am not going to make a hassle about it.

Line of discolored pixels suddenly appeared

So yesterday I picked up my phone after it had been sitting on the desk, not even on the charger, and have a persistent line of pixels that are discolored (I don't know if 'stuck' fits with OLED displays). They look like they are brighter than the rest of the screen, however when I turn the brightness all the way up they are still visible. When a black image falls on the line, the pixels don't show there, which makes sense for an OLED screen.
Is there anything I can try to fix this? This is a little disappointing as I've only had the phone for 1.5 months. Didn't get insurance, but since this is what I would consider a manufacturer's defect, and not the result of anything I've done, I should be able to get a replacement I would think.
Probably $35 to get it replaced...insurance is key to all big electronics you get....
Kodeen said:
So yesterday I picked up my phone after it had been sitting on the desk, not even on the charger, and have a persistent line of pixels that are discolored (I don't know if 'stuck' fits with OLED displays). They look like they are brighter than the rest of the screen, however when I turn the brightness all the way up they are still visible. When a black image falls on the line, the pixels don't show there, which makes sense for an OLED screen.
Is there anything I can try to fix this? This is a little disappointing as I've only had the phone for 1.5 months. Didn't get insurance, but since this is what I would consider a manufacturer's defect, and not the result of anything I've done, I should be able to get a replacement I would think.
Click to expand...
Click to collapse
Do a dead pixel test (not to see if the pixels are dead) but to see which colors this effects...AMOLED has Blue, Red, Green colors..once you go through every one of those 3 colors you can see which colors its effecting...
if its effecting only a certain color..you can balance it out by making your phone display an inverted image with that color...if its on 2 or more colors, then use white(which is all 3 colors)
You must have had something running that used up the color of the screen on all places other then that line...

Anyone else have screen bleeding?

My screen has been like this since day one. In the pictures you can see brighter back light bleeding from the top center/right, the right middle/bottom, and the bottom center/left. Also, a bit of light shines through the white bezel in the bottom center which now that I notice, won't stop bugging me.
Was hoping it would go away but I got this on Amazon so an exchange would be easy as long as it comes back in stock soon (white 32GB).
Is mine the only one plagued with this? Keep in mind that this is with brightness turned all the way up on a black screen.
Yea I have screen bleed at two spots but it doesn't bother me unless for some reason it starts to expand then it will become an issue.
Most LCD panels, which are backlit, will have some light bleed around the edges. You can return the phone for a different one, but you'll probably have the same issue. It is the nature of backlit LCD panels. AMOLEDs don't have this problem since each pixel has its own light source.
Thanks for the input guys!
I don't seem to have this issue on mine. I can't notice anything like this when I turn on Moto Display. Is there an easy way for me to test this out?
the nature of LCD. one of the reasons I enjoy amoled as well.
Sent from my Moto X Pure Edition
I have this screen bleeding too.
I've got my device yesterday and started "Dead Pixel Test", on the black screen i saw the screen-bleeding.
All my previous devices didn't have a screen bleeding, or it wasn't noticeable like that.

Blue spots\blemishes appeared on screen

Hey guys,
Yesterday night before i went to bed, three blue spots appeared on the screen.
The degree if their appearance depend on the content shown on the screen -
*if viewing bright white light (such as an artical with white background) the spots are nearly invisible
*when darker colors are shown, for example when i pull the statues bar down - the spots are visible and annoying.
*when the screen is completly dark, the blue spots are highly visible
http://pasteboard.co/28p3JGIm.jpg
http://pasteboard.co/28pbhZts.jpg
http://pasteboard.co/28pdeBFC.jpg
I've never dropped\hit\damaged my phone in any way, i had the case\glass a few days before i even had my phone, and yesterday night those three spots just appeared out of no where - what should i do?
Images not working. I haven't got or seen blue dots on screen before. I would suggest contacting Motorola.
Sent from my XT1572 using Tapatalk
get intouch with Motorola , thats a fault
Does anyone know why this happens? I just happened to me after more than six months of peace.
It's happening to a lot of people. Same with me, and the spots on mine were in the center near the bottom of the display.
Happened to me randomly one month after i got the phone. Had to get replacement from moto. Haven't had problems with new. Been about 8 months. Fingers crossed.
My wife and I each have the same phone her's has had the same blue dot for a month or 2 now: http://i.imgur.com/90U6BMR.jpg
Mine just developed a small white dot in the upper right corner of the screen.
ugh.
I believe these are from pressure against the back of the LCD. After I replaced my screen due to cracks I noticed that I had to play with all 20 screws a lot becasue if even one was too tight it would make a spot on the screen and I had to keep adjusting all the screws slightly, it was like putting a head on an car engine, slightly too tight on one screw would often cause inperceptable torque on the LCD and then a spot would appear above a different screw. Took a lot of adjustment and its still not perfect. From the pictures I'm seeing of the large blue spots and their locations, I'm susupicious something got jarred between the LCD and MB which is very sensitive as I said almoast imperceptable screw torques are enough to cause very similar artifacts (though they could also be just causing some kind of ground issue also, they are dead white with light blue around them, very small becasue the screws are small, and also very particularly pronounced.
So WILD guess is three things:
1 something not sharp or pointed moved somehow and is causing pressure on the back of the lcd directly below the blue spots.maybe those 2 rubber boots that cover two connections (you see them immediately and must remove both when doing anything to the phone after the glued on back is off.
2 LCD Failure
Probably 2 but if you are capable and adventurous check 1. Or ship it if still under warrnaty. Anyone know how long is the warranty? If you buy off of MOTO like I did?
I must be the special one. I have a red dot on mine.
I noticed a vague blue spot in my moto g 2015 today as well. When i press it lightly, the center of the spot turns to a small sharp bright white dot.
I aggree it must be caused by internal pressure. I had the same sort of spot on my HTC Desire. When i replaced the battery, the spot was gone. Turns out a drained/old Li-ion cell expands quite a bit, this caused the pressure from the inside on the screen.
My Moto G is only 6 months old so you wouldn't expect the battery to be faulty yet... Too bad the Moto G doesn't let you replace the battery yourself in an easy way like with my old HTC.
Did anyone experience the spot disappearing after replacing the battery with a fresh one? And does anyone know if old Moto G batteries look thicker than normal after they die?
I just started seeing this about a month ago, mine looks like the Pepsi logo, red and blue orb.

Galaxy S4 1337M Green Flickering Display

Hey,
I've had my S4 for a few years, it is unrooted and running the stock Touchwhiz rom 5.0.1.
Whenever the devices screen is about to turn off it flickers green, it started a few months ago and was hardly noticeable, but within the past few weeks it has gotten worse. It sometimes flickers while in use, but usually on flickers when the screen is about to turn off. It seems to only effect the lower 4/5ths of the screen.
I have a video, but I'm a new user and XDA wont allow me to post links yet.
youtu.be/UNpFWmYaAo4
If factory reset doesn't solve it then you should prepare for the screen to die at some point. Or maybe it's the GPU. Either way, something's gonna break.
I had something like this after dropping my phone onto a heavy tiled floor. it started with a dead pixel and whenever the screen dimmed before going off the bottom third of the panel would flicker.
eventually a bright green line went thru that dead pixel from the top to the bottom of the screen.
I lived with it like that for over a year until the digitizer started to become unresponsive.
make sure you get a genuine amoled replacement screen when you finally accept the inevitable. I got conned with a cheap knock off LCD replacement display which has terrible terrible contrast and can't cope with shadows...

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