N7 shows either black screen with scrambling dots or green - Nexus 7 Q&A, Help & Troubleshooting

Hello
I left it charging all night long but when i wanted to power it on it shows the Google logo then it turns black with some scrambling white dots(noise) as i would guess is loading up.
I restarted it few times up to it was showing just a green screen .
If i power it on and holding the volume buttons it does show the bootloader menu (the green android) normally but when i choose recovery mode it starts again with the white noise .So basically i can only see clearly the Google logo and the bootloader menu.
I don't know what is broken so i can replace . The screen? The display ribbon?
I changed the battery 3 weeks ago and it has been fine up til now.
Oh and it does not boot up at all unless it's plugged in
Could a bad battery cause video issues?
Has anyone seen anything similar or can maybe give me a hint or what could be broken?
Thank you

try to flash stock rom again
maybe ur system and recovery partition gone bad.
Sent from my N901C using Tapatalk 2

Related

Problems while charging the phone

Hey guys, i got a problem with my N4 :
When i plug-in the charger, the battery icon appears, after few cycles of the battery icon the screen turns off and if i turn on the screen again, the phone turns off and the red led start blinking.
I recently tried to fix the "red light of death" issue that i had ( i removed the battery connector and then put it in again ).
Also, if I hold power + down volume, the n4 starts but turn off after showing the "Google" logo.
I believe its a software problem but i dont know neither which one it i nor how to fix it.
I'm sry for my english and i hope someone will help me
Thanks.
That sounds more like a hardware issue. You can try flashing the stock images, but I'm guessing you're in need of an RMA.
One last thing, when i go to fastboot ( holding power + down volume ), as soon as i reach the menu the phone instantly boot without me telling him to do so. Thats why i think theres something wrong with the software.
Any last moment idea before i sent my phone to RMA ?

After i disconect the charger red led still on!

I always charge my cellphones turned off. So im doing the same thing with my s4 i have it for almost a month. This problem occured only 2 times after the new OTA firmware MEA update. I didnt root the phone or did anything its completly stock. So when im charging the phone the red led is on and if u press the home button it shows the battery animation and some loading dots etc etc and after few secs fades and the red led glows again. Dunno what happened today but while on charge the red led was glowing i pressed the home button and the battery didnt appear like it wasnt responding at all, i disconected the charger but the red led was still on and after a longer hold on the power button than normal dunno like 6-7 secs maybe, the phone booted and everything was normal. What can cause this thing im worried this is the second time this happens and its random it occurs on random charges it occured only 2 times till now.
Sorry for my bad english i hope you can help me out :/
forgot to mention GT-I9505
dimzaaa said:
I always charge my cellphones turned off. So im doing the same thing with my s4 i have it for almost a month. This problem occured only 2 times after the new OTA firmware MEA update. I didnt root the phone or did anything its completly stock. So when im charging the phone the red led is on and if u press the home button it shows the battery animation and some loading dots etc etc and after few secs fades and the red led glows again. Dunno what happened today but while on charge the red led was glowing i pressed the home button and the battery didnt appear like it wasnt responding at all, i disconected the charger but the red led was still on and after a longer hold on the power button than normal dunno like 6-7 secs maybe, the phone booted and everything was normal. What can cause this thing im worried this is the second time this happens and its random it occurs on random charges it occured only 2 times till now.
Sorry for my bad english i hope you can help me out :/
forgot to mention GT-I9505
Click to expand...
Click to collapse
Something similar Happened to my S2 years ago. Your USB port might be either dirty or damaged unfortunatey.
Sent from my GT-I9505 using Tapatalk 2

[Q]Bootloop and Battery not charging

Hi, so my phone decided to stop working all of a sudden.
I was just doing things on my pc when I heard my phone rebooting, after I had recenly plugged it in.
It's running the latest stock ROM and not rooted. When I try switch it on it shows the Samsung Logo and on some occations some pixels create a fuzzy area underneath the logo text and at the bottom of the screen, it then switches off and after a while tries to boot again. When I try charge the phone it goes to the battery icon with the loading circle but nothing moves and yet again some of the pixles of the battery icon become distorted and then it switches off and tries again(also it vibrates twice before showing the battery icon). I can boot into Dowload mode and my PC recognises the phone(as well as odin) but I can't boot into recovery, or Safe Mode for that matter. I can remove the battery when in dowload mode and the phone remains on but I need the battery inserted to start up anything. I've only had my phone for two months now. Maybe I could be moisture from my shower earlier, I'll leave my phone in a bowl of rice overnight to see if that does anything.
Please try help me fix my problem. I've been looking for a solution all night.
Also due to me being overseas I can't format my phone as I'll lose my WhatsApp validation and all the pictures I've taken so far will be lost.
Thanks in advance.
It's not a software problem so you don't need to format.
My guess would be that you need a new battery.
Lennyz1988 said:
It's not a software problem so you don't need to format.
My guess would be that you need a new battery.
Click to expand...
Click to collapse
The battery isn't even swollen though?
I just tried starting up the phone by turning it on, then plugging in the cable and hitting the battery out but it still didn't boot.
Unfortunately I'm far away from a big city so I can't get another battery to test it to be absolutely sure though.
Update:
I just tried booting it again and it got to the other Samsung screen where the LED is Blue and the Logo flashes blue behind it(Only got here once, hasn't gotten this far again yet). I left it for a bit but it just got stuck there and there was the same distorted pixels like in any other type of screen I get to also the logo stopped flashing when I tapped the screen and pressed the home button(this is when the distorted pictures started again).
Here is an attached Image of the flickering part of the screen. It gets stuck on this screen and flickers at the bottom and just underneath the Logo and eventually turns off.
No one know the problem?
BaD_RoBoTs said:
No one know the problem?
Click to expand...
Click to collapse
It's a hardware failure. Let's hope it's your battery even though it's not swollen.
Lennyz1988 said:
It's a hardware failure. Let's hope it's your battery even though it's not swollen.
Click to expand...
Click to collapse
I tried a new battery today and it had exactly the same problems
So by some miracle it booted all the way to the lock screen and then rebooted from there right back to the lock screen again and I unlocked it and the home screen was fine and the phone seemed to function for a few seconds then it restarted and then got stuck at the Samsung logo again, I did manage to see that there was 17% Battery left so It has enough power to boot it. So I dunno what the hell could be causing it. It's such a weird problem I have no idea of how to fix it(within the warranty that is). I forgot to mention that the screen has 3 stress fracture cracks on the screen so somehow I think it is bending in my pocket, so that might be a reason why it's acting so weirdly.
I also noticed that if I leave the battery out for a decent amount of time and try boot the phone up it boots up for about 20 seconds and then reboots again into a bootloop again. Also the battery percentage is at 0% apon boot, by this stage I've plugged it into my PC to try pull files off of it(Which I managed to get some files off).

Boot Logo Repeating

I have a galaxy s4 (i9500) and got it in used condition, a year ago. Never suspected a single problem in it.
Today I powered off my mobile for charging then after 25 minutes I took it off. I held the power button then I saw my boot logo(Where there is written Samsung Galaxy S4 GT-i9500). That logo kept showing as usual for 2 seconds and screen went black and again that logo appeared for 2 seconds and screen gone black and again it appeared, so, I'm stuck in kinda loop not a bootlooop exactly(maybe because bootloop refers to being stuck on boot screen while in my case its boot logo). I then removed the battery and inserted it back after an hour and as soon as I inserted it back the mobile itself turned on as if I held power button but this time again I was stuck in that loop. Moreover when I tried going into download mode, I didn't even need to hold the power button along with the volume down and home, it itself proceeded to confirmation screen of odin mode. And after that confirmation screen appeared saying that whether I really want to boot into download mode, disappeared itself after like 3 or 4 seconds even though I didn't press any key. And in case I press vol up key confirming to boot to download mode, then it again takes me to that loop. I'm too much confused . I can't even flash the firmware as it won;t boot to download mode neither am I able to boot into recovery.
Now do u really think the problem might be the power button(Which is maybe stuck in the state of pressed).
Or else it can be the battery coz my battery is also just average not too good?
I also inserted the command( in build.prop file) for enabling nav. bar and the code was correct but I never rebooted after inserting that. this was the first time I rebooted after that.
SOrry for some bad English.
Do you have something like this? I'm now having problem with getting my phone back to work...
https://youtu.be/HxnV-tn2vpA
From what you say it seams like power button problem, try to start the phone and connect it to the charger. When it start take out the battery, it will be powered by charger and you will eliminate battery problem.

Does my phone dead?

Hello, a while ago a had a problem with a phone in some cases my phone just started reboot and stuck on "Samsung" logo then restarted again. In another way, the screen had weird rainbow lines on screen then phone stuck.
Last couple days I had another rainbow lines on screen in reboot screen. Then screen turned off and blue indicator stays on, it was like that till battery drained off.
I couldn't do anything when it happens. After charging phone I made restart by pressing power+volume down and again it had the same problem as before.
It means my phone dead? time to buy the new one? or there is a way to fix that?
Thanks for the help.

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