[Q] Screen won't switch on and neither will the charging led - Motorola Droid 4

Hi guys,
My mobile phone seems to have a not working screen. The weird thing is that the backlights work and I can connect via adb, but the screen and the charging led will not.
Do you think it could be because of a faulty or not connected wire? I want to make sure that changing the screen would solve the problem before buying one.
Thanks!

Update: I just noticed that the screen is on but extremely dim. It´s not possible to see anything at all.

Could be LED backlight
Does moto logo show, when rebooting?
Sent from my DROIDX using Tapatalk

sd_shadow said:
Could be LED backlight
Does moto logo show, when rebooting?
Sent from my DROIDX using Tapatalk
Click to expand...
Click to collapse
Yes, the mobile works normally. It's just that the charging led (the one on top of the screen) won't work and the screen is extremely dark. It's almost impossible to see anything unless you are in a room with just a little light.
The brightness is set to 100%. It's probable a faulty screen or a loose connection but I would like to find a way to know if that's the case

daimyorl said:
Yes, the mobile works normally. It's just that the charging led (the one on top of the screen) won't work and the screen is extremely dark. It's almost impossible to see anything unless you are in a room with just a little light.
The brightness is set to 100%. It's probable a faulty screen or a loose connection but I would like to find a way to know if that's the case
Click to expand...
Click to collapse
That was not what I was asking, is the moto logo as bright as it should be when rebooting?

sd_shadow said:
That was not what I was asking, is the moto logo as bright as it should be when rebooting?
Click to expand...
Click to collapse
ah sorry. I see what you mean. No, the screen is always so dim that it's really hard to know if the mobile is rebooting.

daimyorl said:
ah sorry. I see what you mean. No, the screen is always so dim that it's really hard to know if the mobile is rebooting.
Click to expand...
Click to collapse
so it's not a screen setting or bad app, and not likely a software issue.
It could be a bad screen LCD connection, but guessing the LCD screen needs to be replaced.
can buy a new LCD for about $30 on ebay, but maybe more trouble that it's worth
Motorola Droid 4 Screen Take Apart Repair Guide
could have someone else fix it
http://www.repairsuniverse.com/repair-service.html
or it's time for a new phone

I will try to fix it myself. The price of getting a new one will be similar to the price of sending it to repair so that would make no sense.
Thank you very much, sd_shadow

Related

If your screen doesn't turn on or you think it doesn't charge, look here

I just received my nexus and I thought the battery was dead cause it showed the battery icon briefly. I left it charging for an hour and nothing. I tried the flashlight trick on the screen and I could see the welcome screen. I disable the automatic dimming feature and now my screen turns on. It must be a software issue on the sensor. I don't know yet.
So you shine a flashlight at the ambient light sensor and it turns the screen back up? Like the sensitivity of the sensor is too low? I'll have to make a mental note of this for when mine finally comes in.
Yes if you can't see the screen. If it still doesn't work, shine the light on the screen and you should be able to see the welcome screen. I don't know if you ever had your laptop LCD inverter burn out?
Thanks for this post. I had the exact same problem. I struggled to get up and running, but figure it out with the help of my GNex.
WG
Thanks for the info.
I had this problem and I'm getting mine replaced. This is almost certainly not a software issue, else everybody would be having it (and if it were a misconfiguration, it would go away with a flash of the factory rom).
mewantnexus7 said:
I had this problem and I'm getting mine replaced. This is almost certainly not a software issue, else everybody would be having it (and if it were a misconfiguration, it would go away with a flash of the factory rom).
Click to expand...
Click to collapse
Do a search for light sensor, and you'll find other people with this problem.
WG
True, I can't even see youtube in landscape mode cause the screen will shutoff. I have to have it in portrait mode.
Sounds more like a hardware problem. A light should DIM the screen, not brighten it. The sensor is reversed.
Sent from my Nexus 7 using xda app-developers app
mkiker2089 said:
Sounds more like a hardware problem. A light should DIM the screen, not brighten it. The sensor is reversed.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
So when you walk outside to the bright sun, you would want your tablet's brightness to be at the lowest setting? I doubt it

display problem

Sometimes i noticed while charging or on zero brightness my display is very wierd or greyed out or colours are messed up. Increasing brightness usually solves this
jazn22 said:
Sometimes i noticed while charging or on zero brightness my display is very wierd or greyed out or colours are messed up. Increasing brightness usually solves this
Click to expand...
Click to collapse
Yea,i too noticed this.......wat could be the problem guyz???????
Reply
For me it happens to and its weird but after half brightness it looks great. its normal in our phone i guess.
Nikko028 said:
For me it happens to and its weird but after half brightness it looks great. its normal in our phone i guess.
Click to expand...
Click to collapse
Hmm. Did you noticed another thing. One low brightness if you look real close, you can see, hmm i cant really explain, but its like the display on TV on low voltage., to better recognise the defect you would need some specific light colours on the screen like grey, yellow etc
and while charging.....touch sensitivity decreases....I have to press a little hard for selecting!!
does anyone have this prob?
narutosri said:
and while charging.....touch sensitivity decreases....I have to press a little hard for selecting!!
does anyone have this prob?
Click to expand...
Click to collapse
Yes, I too have this problem
During usb charging and and normal charging
Sent from my GT-I9070 using xda app-developers app
narutosri said:
and while charging.....touch sensitivity decreases....I have to press a little hard for selecting!!
does anyone have this prob?
Click to expand...
Click to collapse
Yes, i have it. Especially when when typing.
Can anyone do a favour
Please download the below picture
Now please see the picture in 3,5,10,15,20 percent brightness
Concentrate on grey portion
Does the display flickers or any other variations
jazn22 said:
Hmm. Did you noticed another thing. One low brightness if you look real close, you can see, hmm i cant really explain, but its like the display on TV on low voltage., to better recognise the defect you would need some specific light colours on the screen like grey, yellow etc
Click to expand...
Click to collapse
It's true. When i use blue backgrounds i can apreciate
Sent from my GT-I9070 using xda app-developers app
I have seen sometimes the whole screen turn yellowish or so. But it disapperas after a restart
Is these problems limited to Samsung galaxy s advance or other Samsung phones. Does other phone of other companies have these problems
from my experience some of these things are related to unappropriate charger. especially screwed sensitivity
It's normal for amoled screens. My father have the same problem when charging phone but grayed screen is only in s adv. I have one more issue. My right side of screen is 'sharped' on red colours. I can see little stripes on it but only when it's red.
Wysyłane z mojego GT-I9070 za pomocą Tapatalk 2
Lock Pattern Breaking off
Sometimes, when i try to draw my unlock pattern, it cannot be drawn as a continuous pattern. It breaks off as separate points. It is really annoying as I cannot unlock my phone, even after cleaning my fingers&screen. And since single point tries don't register as failed tries, it does not say "too many failed attempts" .
Do any of you have this problem? possible reasons/solutions??
thanks, in advance.
harith.unnikrishnan said:
Sometimes, when i try to draw my unlock pattern, it cannot be drawn as a continuous pattern. It breaks off as separate points. It is really annoying as I cannot unlock my phone, even after cleaning my fingers&screen. And since single point tries don't register as failed tries, it does not say "too many failed attempts" .
Do any of you have this problem? possible reasons/solutions??
thanks, in advance.
Click to expand...
Click to collapse
I get this problem while charging sometimes. But its rare. Sometimes even if didn't enter any other it will lock me out saying
"too many failed attempts"

[Q] HTC One (m7) Green LED not working

I currently have a stock HTC One in Canada on the Telus network.
The last few weeks i noticed the LED light growing dim. About a week ago the phone rebooted itself only to say it had an issue and that it was not shutdown correctly.. and asked if i wanted to report the problem to HTC.
The phone the froze with the Screen on but a black background.
After 15 minutes i powered off the phone.
At this point the phone would not power back on.. when i plugged the power in to the phone from the wall the phone would not indicate that it was charging via LED.
I tried booting no response.. no vibrating,.. just slight flashing lights on the Home/back buttons
I ended up booting up the phone by shining a bright light into the light sensor while holding Power and DOWN volume..
Phone has been working fine ever since, however still no LED.
I did a factory reset and still no LED.
Has anyone see anything like this?
I want to root and install Google Edition Android however if the hardware is faulty i dont want to risk voiding the warranty and being stuck with a faulty phone.
xJuicex said:
I currently have a stock HTC One in Canada on the Telus network.
The last few weeks i noticed the LED light growing dim. About a week ago the phone rebooted itself only to say it had an issue and that it was not shutdown correctly.. and asked if i wanted to report the problem to HTC.
The phone the froze with the Screen on but a black background.
After 15 minutes i powered off the phone.
At this point the phone would not power back on.. when i plugged the power in to the phone from the wall the phone would not indicate that it was charging via LED.
I tried booting no response.. no vibrating,.. just slight flashing lights on the Home/back buttons
I ended up booting up the phone by shining a bright light into the light sensor while holding Power and DOWN volume..
Phone has been working fine ever since, however still no LED.
I did a factory reset and still no LED.
Has anyone see anything like this?
I want to root and install Google Edition Android however if the hardware is faulty i dont want to risk voiding the warranty and being stuck with a faulty phone.
Click to expand...
Click to collapse
This has happened to me too. Just one day noticed no led light anymore. Strange thing to break down on a phone! Have you had any joy in getting a fix?
chaz81 said:
This has happened to me too. Just one day noticed no led light anymore. Strange thing to break down on a phone! Have you had any joy in getting a fix?
Click to expand...
Click to collapse
Unfortunately I have not been successful getting the LED back.. I am debating sending the phone in for Warranty work... or just sucking it up and rooting/flashing custom roms.
My main concern is that there may be a bigger hardware issue going on internally.
I'm really just trying to get a feel of how common this issue is..
xJuicex said:
Unfortunately I have not been successful getting the LED back.. I am debating sending the phone in for Warranty work... or just sucking it up and rooting/flashing custom roms.
My main concern is that there may be a bigger hardware issue going on internally.
I'm really just trying to get a feel of how common this issue is..
Click to expand...
Click to collapse
Try this: in dialer type *#*#3424#*#* (3424 = DIAG), that will bring up HTC internal diagnostic, there's a "LED Test", select and run it to see if it's a hardware defect or not (you will get Orange and Green LED tests).
nkk71 said:
Try this: in dialer type *#*#3424#*#* (3424 = DIAG), that will bring up HTC internal diagnostic, there's a "LED Test", select and run it to see if it's a hardware defect or not (you will get Orange and Green LED tests).
Click to expand...
Click to collapse
Thanks for the info.. Just tried it the LED test .
To my surprise the Green and Orange lights actually show up but I have to hold it to my eye and block out any external light to see anything.. kind of defeats the purpose of an LED notification light..
I guess the light works its just extremely DIM.
Any way of controlling the LED light brightness?
xJuicex said:
Thanks for the info.. Just tried it the LED test .
To my surprise the Green and Orange lights actually show up but I have to hold it to my eye and block out any external light to see anything.. kind of defeats the purpose of an LED notification light..
I guess the light works its just extremely DIM.
Any way of controlling the LED light brightness?
Click to expand...
Click to collapse
Don't know, but I just ran the same test in a very well lit environment and the Green and Orange LED are quite bright... I don't have to "go look for them" they pop out nicely.
Are you using a cover of any kind? Or maybe the LED has somehow shifted it's position and is being partially covered by the speaker grill? Hate to say it, but sounds like a hardware issue. Sorry
Hope someone else has other ideas.
nkk71 said:
Don't know, but I just ran the same test in a very well lit environment and the Green and Orange LED are quite bright... I don't have to "go look for them" they pop out nicely.
Are you using a cover of any kind? Or maybe the LED has somehow shifted it's position and is being partially covered by the speaker grill? Hate to say it, but sounds like a hardware issue. Sorry
Hope someone else has other ideas.
Click to expand...
Click to collapse
Not using any case that would cover the LED.. that being said even with the Case off.. the LED is still very dim.
xJuicex said:
Not using any case that would cover the LED.. that being said even with the Case off.. the LED is still very dim.
Click to expand...
Click to collapse
I ran the diagnostics tool. Mine didn't work guess it's going back
nkk71 said:
Try this: in dialer type *#*#3424#*#* (3424 = DIAG), that will bring up HTC internal diagnostic, there's a "LED Test", select and run it to see if it's a hardware defect or not (you will get Orange and Green LED tests).
Click to expand...
Click to collapse
Hmm tried and then the screen just refesh by no diagnostic screen at all..
Not sure is my custom ROM affecting it.
Using ARHD 20.1
turtleism said:
Hmm tried and then the screen just refesh by no diagnostic screen at all..
Not sure is my custom ROM affecting it.
Using ARHD 20.1
Click to expand...
Click to collapse
Shouldn't affect it. I've been using ARHD 9 through 13.3 and works with all of them.
Sent from my HTC One using xda app-developers app
I've ran the LED test, and all of them work. But they dont light up for notifications, and i have it enabled in the settings.
te5ter said:
I've ran the LED test, and all of them work. But they dont light up for notifications, and i have it enabled in the settings.
Click to expand...
Click to collapse
I have the same problem. Did factory reset two times. Red when charging, green when full but no flashing green for notification. I enabled it in settings.
Have you manage to find a solution for the problem?
Thanks.
bachje said:
I have the same problem. Did factory reset two times. Red when charging, green when full but no flashing green for notification. I enabled it in settings.
Have you manage to find a solution for the problem?
Thanks.
Click to expand...
Click to collapse
I am having the same issue! The light works, but it doesn't blink for notifications!!
nuggstein said:
I am having the same issue! The light works, but it doesn't blink for notifications!!
Click to expand...
Click to collapse
I also have the same problem: when it is charging and when it is fully charged the light works OK but doesn't flash for notifications. But it worked OK some time ago. Actually, when I think about it, it seems that the problem started after I had updated to the current firmware: Android version 4.3, HTC Sense version 5.5, software number 3.62.401.1
It must be issue with firmware/software because LED test works fine.
There's another thread similar to this one and someone there figured out the solution - you do a factory reset but, when the phone reboots, you do not restore everything using your Google account. Go through the setup as normal (without restoring) and once that is complete then you can add your Google account details.
It means you have to download and set up your apps again, but it is worth it to get the LED working.
HI I had a similar problem I cleaned out the hole with a needle and all is well, pin came out dirty (the one on the grill dirt was blocking led )

LED under the earpiece?

I have had the phone for about a week now and I love it, however one of my big complaints is that the active notifications do not show any battery info, charging or percentage blah blah blah. My phone died the other night and when it was plugged in it had a bright green LED under the earpiece. Any other time I've plugged it in it has never come on. Does anyone know why it would come on one time and never again? Has anyone else seen this elusive LED?
SnowKing25 said:
I have had the phone for about a week now and I love it, however one of my big complaints is that the active notifications do not show any battery info, charging or percentage blah blah blah. My phone died the other night and when it was plugged in it had a bright green LED under the earpiece. Any other time I've plugged it in it has never come on. Does anyone know why it would come on one time and never again? Has anyone else seen this elusive LED?
Click to expand...
Click to collapse
I saw this on a display model at ATT with a dead battery. The earpiece was lit by a green LED.
maybe try lightflow?
WolfsFang said:
maybe try lightflow?
Click to expand...
Click to collapse
I thought the same thing, and I played around with it a little and couldn't get the light to come on. I'm just curious because motorola made the point that LED's don't give any information like active notifications give, yet they still put one on the phone. It just appears it barely ever comes on.
We definitely need to figure this out!
Sent from my XT1058 using XDA Premium 4 mobile app
Never seen an LED on mine, but very interested in this. Would be awesome to enable it!
Sent from my XT1060 using Tapatalk 4
Anyone figure this out? I saw the same light under same circumstances but can't control it.
Sent from my XT1060 using xda app-developers app
with lightflow pro (pay edition) nothing happens...
LED Light Answer
Found the answer in the owner's manual, of all places, on the page "At a Glance" with the illustration of the phone's features. The arrow in the diagram points more or less to the sensor right next to the earpiece. That small oblong is not just the light sensor to turn off the screen when you have the phone up to your ear. It also houses the Low Battery LED. Sometimes it really does pay to read the instructions, however boring they may be.
Low Battery LED:
This LED lights up when you plug in your
charger and the smartphone’s battery level is too low to
power on the display. It means that your smartphone is
charging and will be ready to use shortly.
RevLauren said:
Found the answer in the owner's manual, of all places, on the page "At a Glance" with the illustration of the phone's features. The arrow in the diagram points more or less to the sensor right next to the earpiece. That small oblong is not just the light sensor to turn off the screen when you have the phone up to your ear. It also houses the Low Battery LED. Sometimes it really does pay to read the instructions, however boring they may be.
Low Battery LED:
This LED lights up when you plug in your
charger and the smartphone’s battery level is too low to
power on the display. It means that your smartphone is
charging and will be ready to use shortly.
Click to expand...
Click to collapse
Knowing that Motorola's way of Notification LED was their Active Display, it would be redundant to have the Notification LED too.
Even with root there's no physical way to enable this light in other circumstances?
I emailed LightFlow and got this reply:
Hi
Sadly it doesn't really have much led hardware in it. There's one
green led which I think can only be controlled with root access from
the experiments I've tried with a user.
Cheers
andrew
Sent from my XT1060 using xda app-developers app
I'm pretty sure it was confirmed that the LED in the earpiece was connected directly to the charging hardware found on the MotoX. What does this mean? It means we will probably never be able to take advantage of it. It's nothing the software can take control of.
Just to throw this out there, will this work?
http://www.androidcentral.com/how-fix-moto-g-notification-led
Pfhortune said:
Just to throw this out there, will this work?
http://www.androidcentral.com/how-fix-moto-g-notification-led
Click to expand...
Click to collapse
doesn't work
jayboyyyy said:
doesn't work
Click to expand...
Click to collapse
Oh well, worth a try!

Weird green line

There is a vertical green line near the right side of my screen. I don't know how it got there. I was listening to music and I turned the screen on and its there.
I'm on lightrom 5.1.1. I flashed it the other day and no problems. I would post a screenshot, but it doesn't show in them for some reason.
If it doesn't show in screenshots, that usually means its hardware as only software issues would show in a screenshot. Can it be seen during boot on the coloured parts?
Yes it can.
It's weird because when I turn my screen off, its the last thing to go off after black screen.
FlamingTongue said:
Yes it can.
It's weird because when I turn my screen off, its the last thing to go off after black screen.
Click to expand...
Click to collapse
Definitely sounds hardware. I'd return tonarock and if its still present, which I assume it will be, RMA
Battery bar?
Sent from my Nexus 6 using XDA Free mobile app
juggamonkey said:
Battery bar?
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
On the boot animation but not showing up in screenshots?
If it doesn't show up in screen shots, then it's hardware related. Screenshots take a picture of what you see software-wise. If your display completely dies, your phone would probably still turn on and allow you to do things if there were only a way to interact with it. Seeing that the green bar is always present, except in screenshots, it's hardware related. I'd RMA it or return it, depending on when you got it. First though, flash back to stock everything. They might blame you for the hardware fault. Lol.

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