Hi Everyone,
I know its a few threads about how to unbrick Advent Vega and how many threads is that many ideas how to do it.
I was running ViewCOMB 3.2 built 5.1 and everything was ok, but ive installed Rom Manager from Market, and tried other rom (wrong one ).
After reboot nothing is happening, i mean when i press power button for ok 10 sec and then short press again, screen is on black with backlight for about 1 sec and keep coming off.
Ive tried to turn into boot mode (2sec. back + 2 sec. power) about 1000 times already with power cable on and off, but nothing happening.
I have drivers installed on my laptop (had installed custom rom already).
I want to specify a few facts:
Is battery must be charged to full? or should start another try from flat?
If so, how to drain battery if tablet wont power up?
Is better to try with power cable on or off?
Some people saying about holding buttons for a 2 sec, other for 1 sec, what is right?
Any ideas?
Many thanks!
Finally after hours of pressing and holding power + back buttons I've sorted it.
- hold power button for about 10 sec. (to make sure device is off)
- hold back button 2 sec. (don't release)
- press power button till notification sound will come on.
Then had notification sound from Windows about new device connected. On my device list was Nvidia usb boot-recovery device.
Before last try I've charged battery to full (blue light) then disconnected power cable. I couldn't do it with battery full and power cable in (strange).
I think the main hint is to make sure that device is off. Ive noticed that even if screen is off device might be running.
Hopefully this little explanation will help
okti said:
Finally after hours of pressing and holding power + back buttons I've sorted it.
- hold power button for about 10 sec. (to make sure device is off)
- hold back button 2 sec. (don't release)
- press power button till notification sound will come on.
Then had notification sound from Windows about new device connected. On my device list was Nvidia usb boot-recovery device.
Before last try I've charged battery to full (blue light) then disconnected power cable. I couldn't do it with battery full and power cable in (strange).
I think the main hint is to make sure that device is off. Ive noticed that even if screen is off device might be running.
Hopefully this little explanation will help
Click to expand...
Click to collapse
THAAAAAAAAAAAANNNNNKKKKK YYYYYYYYYOOOOOOOOOOUUUUUUU!!!!!!!!!!!!!!!!!!! I had the same problem and I thought it was bricked for like, 4ever, so THNX!!!
i had exactly the same problem last night when i asked CWM to do a backup and the screen went black and wouldnt switch on.
one way to tell if it hasnt powered off properly when its stale booting is to look under the black surround between the screen and the camera and you may see a faint blue light. Only viewable with about 5 deg viewing angle (so same as the screen LOL)
i found i could not get it into boot mode at all. No matter how many times i did it. Ending up taking the back off and pulling the battery and then trying again - guess what? Worked straight away first time!!!
I can only presume that when its in this stale boot state it isnt shutting down properly, even if the light is off etc. Although i did come across a post after sorting it that said sometimes it can take a 60 second press of the power button to properly shut it down when its in stale boot.
So now i'm back to standard modded stock rom 2.2 and its horrendous!!!!
Just finished downloading the beta ics rom exe - so gonna whack that on and have a play! Hope its as good as they say it is. If it isnt, then i'll put honeycomb back on.
I think that instead of pulling tha battery out you could also press and hold the power button for 9 seconds, right?
Related
Today, after I was done using my tablet, I shut it off and noticed it turned off but the green led portion of the power light is still on. Tablet will not respond to power on/off commands, nor can I gain access to it via adb.
I updated to the Energy™ -.¸¸.·´¯ ICS CM9 Kang ROM several days ago, there were no problems there as I have been using the rom for a couple of days now.
All I did was hold the power button down, select "Power down" option came up "this will shut down your tablet" I selected "ok" and that was that.
KFU shows it as offline, as does adb. Windows does not detect the device.
Mine had a similar experience, using AOKP ICS, I powered it off and about 18 hours later I tried to turn it on and got nothing. Turned out the battery was just dead, I think it may have locked up while powering down and killed the battery. I would try a few things:
1. Hold down the power button for 10+ seconds and see if you can get it to do a hard shutdown.
2. Plug it in to the charger and see what happens.
3. Leave it alone for a while and hope the battery dies and it may start up after that when plugged in.
I kind of feel stupid, why is it with technology us geeks start troubleshooting by skipping the simple solutions, like "is it plugged in" well today, holding down the power button for 20 seconds fixed the problem. She booted up and everything is back to normal.
Appreciate the fast reply!
Today I picked up may Nexus 7 and noticed it will not turn on. I let it charge for an hour or so, but then when I tried to start it up, I saw just a black screen. The screen turns on (backlight turns on), but still just a black screen. I read something on the internet about pressing the power button for a full 30 seconds, so I tried that. This time, I got it to flash (for a fraction of a second) the word "Google", and then it was back to the black screen of nothing.
I've never rooted, never tried to do anything fancy with it. I've factory resetted it once after an update to the OS happened.
Is there anything I can do?
You sure it gets juice? Does your charger feel hot after charging some time?
I had this to once, but got it fixed by holding the power button...
Sent from my Nexus 7 using xda premium
Sounds like a charging /battery issue if the 30 sec power didnt work.Did you try a different charger?
Some people have reported weird issues like this that have been rectified by a prolonged charging.
Thanks
It acted strange, but it came back from the dead:
It said "google" for 10 seconds, then a few seconds of black screen, then another 10 seconds of "google", then it booted just enough to tell me that it was going to shut down because of low battery. I let it charge another hour and then it was fine!
eddified said:
It acted strange, but it came back from the dead:
It said "google" for 10 seconds, then a few seconds of black screen, then another 10 seconds of "google", then it booted just enough to tell me that it was going to shut down because of low battery. I let it charge another hour and then it was fine!
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Click to collapse
Quirky little buggers aren't they? Mine did it once and not since.
I just goy my N7 today, plugged in the wall charger, and I'm stuck at black screen, I did the 30 secs hold power button but it's still and black screen. Also I tried this:
1. Plug-in your dead N7 to a wall charger. (Jump immediately to step 2.)
2. Immediately after plugging it in, press Volume Down and Power at the same time.
3. Once in the bootloader menu, use Volume Down until you see “Power Off Device.”
4. Choose that option with the Power button.
5. Once your device is off, unplug the charger and then plug it back into the device.
Still at black screen, any advice???
I'm sorry for posting in this old thread.
Jamiehefe said:
I just goy my N7 today, plugged in the wall charger, and I'm stuck at black screen, I did the 30 secs hold power button but it's still and black screen. Also I tried this:
1. Plug-in your dead N7 to a wall charger. (Jump immediately to step 2.)
2. Immediately after plugging it in, press Volume Down and Power at the same time.
3. Once in the bootloader menu, use Volume Down until you see “Power Off Device.”
4. Choose that option with the Power button.
5. Once your device is off, unplug the charger and then plug it back into the device.
Still at black screen, any advice???
I'm sorry for posting in this old thread.
Click to expand...
Click to collapse
I just solved this, I opened my N7 to check the battery and it turns out it wasn't correctly connected... Just unplugged it and plug in again correctly to make it work!
Jamiehefe said:
I just solved this, I opened my N7 to check the battery and it turns out it wasn't correctly connected... Just unplugged it and plug in again correctly to make it work!
Click to expand...
Click to collapse
Boom!
I was having the same problem. Plugged it into a power source, backlight would come on with a black screen. Got it to show the Google splash screen a few times, but it just wouldn't boot. Tried ADB, but it wouldn't even acknowledge the thing was connected to the PC. I tried a pile of stuffs. Then I read this post. I never thought to check if the thing was actually connected, it wasn't!
Fully functional device now. Thanks for the idea! :good:
So few days ago my phone suddenly turned off and kept rebotting itself (It would reach the samsung galaxy logo and then turn off). I thought it was a battery issue so I removed it for 30mins and tried again, worked fine for an hour then problem started again. I left it over night to charge in the wall socket incase.
Same issue next morning and no solution.
I replaced the battery with a friends and the same issue happened on my phone (i used my battery on his and it works fine on his) so I removed the issue of battery itself.
That evening the phone then just stopped responding at all. It would not respond to pressing the power button (no load, no vibration).
Tried entering download mode using vol down + home + power. Nothing. (So cant use Odin)
Tried entering recovery mode using vol up + power. Nothing
Tried hard reset using vol up + power + home. Nothing.
(All the steps I used a fully charged battery from another s4 phone and removed/re-entered before trying again)
So I check online and notice some people having issues with power button, but even if that is the case - wouldn't my phone still charge? I dont even get the battery chargning icon on the screen when plugged in either PC or wall socket.
I opened it up and changed the motherboard with another samsung s4 and my original problem mobo still does not load on the new s4. (My new mobo worked on the old device though).
The ONLY response I got was when I used my original mobo on new s4 device and plugged it into PC, it popped connect and then disconnect sound and thats it (doesnt recognize usb port).
What are my options apart from getting another motherboard or going to a shop for a JTAG repair? I was contemplating just removing the power button and seeing if that helps in getting a charge response lol
Well your power button is broken for sure. Replace it and then test it.
Lennyz1988 said:
Well your power button is broken for sure. Replace it and then test it.
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Click to collapse
Wouldn't the phone still recognize charging even if the power button is faulty?
penguness said:
Wouldn't the phone still recognize charging even if the power button is faulty?
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Click to collapse
It always takes a few seconds before it starts to charge. So maybe the device reboots before reaching the charging phase. I'm guessing though. But since your problems started with power button issues it would be the logic place to start.
The part only costs a few dollars.
Well I'm exactly in the same situation as you, since this morning on a i9505 running JFLTPE-GPE 5.0 ROM. The screen appears for 1 second or 2 (Samsung logo) then it powers off . I need to remove the battery to try something else.
Same behaviour, even for recovery mode, so Odin is not an option.
I thought that changing some kernel settings have caused that, but as I just put them back to default values, it should not happen.
I didn't have some power button issues, it was just powered off at my wake up this morning. In your case, does your phone vibrate and power up instantly when you put the battery ? That's the case for me, but it should not be the normal.
My problem is actually solved : indeed, it was the power button. I removed all the screws and played a little with this power button (air dust, etc...), enough to make it start correctly !
I managed to do some backups, and now I hope that it won't break again.
Calicodesiles said:
My problem is actually solved : indeed, it was the power button. I removed all the screws and played a little with this power button (air dust, etc...), enough to make it start correctly !
I managed to do some backups, and now I hope that it won't break again.
Click to expand...
Click to collapse
Yeah, that happened before (automatically powering up, vibrating, going to samsung logo and then shutting down and doing it again until I removed battery - putting the battery back in with start it up without pressing the power button).
When it was in that phase, the one thing that did work was doing a soft reset (home+power+down vol, and then holding just power) - however that only worked for like an hour before it went back to the restart phase.
However now it doesn't respond to anything at all. (Any kind of response I got was when I put that mobo in another s4 and plugged in usb, which just gave a connected/disconnect sound on w7, no life on the phone itself).
Be very careful as to what you do, I suggest you do NOT leave the battery on it and charge it (which was the last thing I did before it went unresponsive) - my guess is phone went haywire trying to turn on/off continously.
Hi all,
I'm struggling with getting my 2012 Nexus 7 to start and hope someone out there can help!
I think I may have let the battery become discharged, but anyway here are the symptoms:
Connected the power lead and the tablet initially showed the empty battery icon but then started to flash up the word Google but does not boot up. Left it connected for a couple of hours. Still no joy.
Did a bit of internet research in an attempt to reset the tablet via the button combinations.
With the power lead disconnected, holding on/off plus volume+ together eventually gives a blank screen and from there holding on/off plus vol- gives the Android figure with its belly open. Hitting vol+ scrolls thru the four options of start / power off / recovery mode / restart bootloader, however when I select 'recovery mode' and press the on/off button instead of showing the Android with a red triangle it simply goes back to flashing 'Google'.
From there, if I press and hold on/off and vol- for several seconds the screen gives a momentary blue flash and then the fours 'dancing blobs' appear, eventually to be replaced with the flashing 'Google' but still no boot up.
If I connect the power lead although I can get the initial Android figure, I cannot scoll for any of the options.
All of this sounds like a major fault, but funnily enough yesterday evening I left the tablet with a blank screen and disconnected only to find this morning that it had booted and had all my apps showing, all of which appeared to be working properly. so I connected the charge lead and it said I had 17% battery remaining however the battery charge graph showed a number of major gaps and also showed the wrong date (2 days behind). So I connected the power lead and left it for 10 mins to find that the charge state hadn't moved but also that the screen brightness was reduced as if it wasn't connected. So I unplugged and then re-plugged the power lead and it said it was optimising 1 of 2 apps then the screen brightness returned to full, any appearing to function ok.
So left if for around 30 mins at which point the charge had gone up to 21% and I decided to try switching it off. Bad move!! Instead of booting up it simply returned to the flashing 'Google'. Which is about where the story started.
I've had the back off and the battery connector hasn't shifted, but one thing I did notice is that there is a fourth key switch below the vol- switch but without a hole in the cover to actuate it when assembled. Is this part of the button-press combination to restore factory seetings with the back off ??
If anyone out there can make sense of what the tablet is doing, I'd love to hear from you!!
Mike
I have a at&t S4 that all of a sudden today stopped working. When I restart the phone by taking the battery out and putting back in, it gets stuck on the Samsung Galaxy S4 logo and then a black screen. I tried going to recovery mode(volume up + home + power button), and it shows recovery booting in blue for a sec then goes black. I tried for download mode the warning comes up but after pressing volume up it goes black. I really don't know what to do at this point.
Tried using kies or smart switch to perform a firmware recovery?
Yes, the computer doesn't recognize that the phone is connected. It's as if when the phone goes to the black screen its actually powered off. The only time I get anything from the phone is when I pull the battery and reinsert it.
bubba9004 said:
I have a at&t S4 that all of a sudden today stopped working. When I restart the phone by taking the battery out and putting back in, it gets stuck on the Samsung Galaxy S4 logo and then a black screen. I tried going to recovery mode(volume up + home + power button), and it shows recovery booting in blue for a sec then goes black. I tried for download mode the warning comes up but after pressing volume up it goes black. I really don't know what to do at this point.
Click to expand...
Click to collapse
When the phone battery are too low, the phone could behave like that too.
Do you know that battery is fully charged or has more than 60%?
If not charge the phone first.
Plug the charger. If you did not see any sign showing that you phone is charging, press and hold the power button for 10 sec and release it. You should see the phone charging image.
Let me know whether your phone has enough battery power left but showing the above mentioned problems.
sway8966 said:
When the phone battery are too low, the phone could behave like that too.
Do you know that battery is fully charged or has more than 60%?
If not charge the phone first.
Plug the charger. If you did not see any sign showing that you phone is charging, press and hold the power button for 10 sec and release it. You should see the phone charging image.
Let me know whether your phone has enough battery power left but showing the above mentioned problems.
Click to expand...
Click to collapse
Yes, the battery is fully charged. I have another S4 Active that I've swapped the batteries with, along with a spare official Samsung battery and charger. It doesn't matter which battery I use, the phone acts the same with any of the 3.
bubba9004 said:
Yes, the battery is fully charged. I have another S4 Active that I've swapped the batteries with, along with a spare official Samsung battery and charger. It doesn't matter which battery I use, the phone acts the same with any of the 3.
Click to expand...
Click to collapse
If you have enough battery power left but the phone was behaved like that, you might need to flash the firmware.
Are you in lollipop or kitkat? For the time being, the only firmware available for kit-kat and lollipop is NB1 firmware cooked by muniz_ri . You can get it from here.
You mentioned that you can go to download mode but the phone shut off when you press volume up to go to the download mode after the warning.
Try the 10 sec method. Go to the download mode (power+home+volume-down) but keep holding the power button for 10 sec even though you see the warning message appear. Then you press volume up to go the download mode. Try this way and let me know.
sway8966 said:
If you have enough battery power left but the phone was behaved like that, you might need to flash the firmware.
Are you in lollipop or kitkat? For the time being, the only firmware available for kit-kat and lollipop is NB1 firmware cooked by muniz_ri . You can get it from here.
You mentioned that you can go to download mode but the phone shut off when you press volume up to go to the download mode after the warning.
Try the 10 sec method. Go to the download mode (power+home+volume-down) but keep holding the power button for 10 sec even though you see the warning message appear. Then you press volume up to go the download mode. Try this way and let me know.
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Click to collapse
It was on Kitkat. I can press the volume up and get it to show the download android screen but it immediately shuts off. Holding the power button for 10 secs. and then the volume up didn't do anything. The phone shuts off after 1-2 secs. of doing anything.
bubba9004 said:
It was on Kitkat. I can press the volume up and get it to show the download android screen but it immediately shuts off. Holding the power button for 10 secs. and then the volume up didn't do anything. The phone shuts off after 1-2 secs. of doing anything.
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Click to collapse
That is strange. The same thing happened to me. But I avoided the phone shut down by 10 sec methods.
Just hold the power+home+volume down for 10 sec, even though the warning sign show up, and then let it go all of them. Plug the phone to the computer and then press the volume-down to go into download mode. It works for me. Not on the first try though.
Try doing that with batter charger plug in too.
sway8966 said:
That is strange. The same thing happened to me. But I avoided the phone shut down by 10 sec methods.
Just hold the power+home+volume down for 10 sec, even though the warning sign show up, and then let it go all of them. Plug the phone to the computer and then press the volume-down to go into download mode. It works for me. Not on the first try though.
Try doing that with batter charger plug in too.
Click to expand...
Click to collapse
Thanks for your help. I figured out whats wrong, its got a faulty power button. I took the phone apart, put it back together, and was able to get it to boot completely. The slightest touch of the power button causes it to reboot though, so I'm going to need to replace it.
bubba9004 said:
Thanks for your help. I figured out whats wrong, its got a faulty power button. I took the phone apart, put it back together, and was able to get it to boot completely. The slightest touch of the power button causes it to reboot though, so I'm going to need to replace it.
Click to expand...
Click to collapse
Glad you found the problem. I was trouble shooting for the software error.
Yes, power bottom could give you a problem too. I use screen off app so I do not have to use power button to turn off the screen.