Suddently it shuts down - Nexus 7 Q&A, Help & Troubleshooting

While using it, even if it has 30-40% charge, the nexus 7 suddenly shut down, just black screen and nothing more. The only way to turn it on again is to connect it to the charger... is it a known issue?

Seems to be a "known issue" on a very small fraction of devices.
Don't know what the solution is; some suggest that most weird battery %charge / premature shutoffs are due to loose battery connector terminals.
I don't know what the solution is; but there are lots of posts on this topic - use the search features of the forum to find them. If you find a solution for your situation, post back in this thread with what worked for you and change your post title to include the text [SOLVED].
cheers

Related

Tytn will not charge when the screen is active

I have a tytn with the newest rom 1.18.416.1
all is perfect BUT....
When I have it charging and I turn on the screen or a call comes in the charging light stops.
Also if I show the battery screen while plugged in it does not say charging and the indicator bar does not move like it did no my jkam.
Any Ideas?
Thanks
Well I guess I was the only one to have this problem. Anyways I just thought I would update anyone who may have this happen. After I soft reset the device 2 times all seem back to normal.
If you do a search in the Hermes Accessories forum, you'll find a lot of similar threads with the same solution, and even more...

Help me please, hermes won't turn on

I searched to see if I could find an answer but there weren't any posts that could specifically help me. I only found one post but it wasn't clear.
My phone was working fine in the morning but when I checked on it after class it wouldn't wake up but light was still blinking. I thought a simple soft reset would unfreeze it but nothing. After removing the battery to get it to power off it won't turn back on. A guy posted this same problem in one of the threads and there was a mention of the battery but it was vague. When I try to charge it, there are no indicator lights. With the battery out, the red indicator light is on.
Can someone help me find out whats wrong and if I can fix it myself. Is it the battery or the phone? Thanks in advance
jchan4 said:
I searched to see if I could find an answer but there weren't any posts that could specifically help me. I only found one post but it wasn't clear.
My phone was working fine in the morning but when I checked on it after class it wouldn't wake up but light was still blinking. I thought a simple soft reset would unfreeze it but nothing. After removing the battery to get it to power off it won't turn back on. A guy posted this same problem in one of the threads and there was a mention of the battery but it was vague. When I try to charge it, there are no indicator lights. With the battery out, the red indicator light is on.
Can someone help me find out whats wrong and if I can fix it myself. Is it the battery or the phone? Thanks in advance
Click to expand...
Click to collapse
Hi
First, I notice you have not tried a hard reset. This will in all probability fix your problems, but you will loose any data of your own that you have saved on the device. (hope you have a fullbackup!!)
Before doing the hard reset it may be worth running through the steps here http://michael-channon.spaces.live.com/Blog/cns!4472423472DCFC38!202.entry for the refusal to charge issue. You see I am not sure whether your device is not turning on because it has insufficient power or whether it has a major "crash". Hermes does have a problem for some folks when it reaches very low charge of not being able to staret charging. This though is normally indicated by a RED LED showing when charger is plugged in (clearly yours only does this with battery out - which is normal) Somehow you need to get that Amber LED showing. Repeat the charging solution a few times - it does not always work straight off.
When all else fails - hard reset.
Mike
nothing working yet
Hard reset isn't working. Is the menu supposed to come up even if theres no battery? Tried hard reset with and without the battery, but nothing pops up. Your charging solution hasn't worked yet but I'll keep trying. Any other things I can try? Thanks for the help mike.
It worked for me: Remove battery and plug it to AC during 5 minutes. Then insert the battery and soft reset. My TynT came back life in this way
'Dead device won't charge (solution provided)'
This isn't for your model I don't think, but the "won't charge" problem (and hence solution) sound similar. It worked for me on a dead SPV M3000 (HTC Wizard, iMate etc) (and was I grateful!!)
See http://www.expansys.com/ft.aspx?i=125518&thread=226
Paul

Phone will not turn on... HTC TyTN

I have the HTC Tytn and it will not turn on. It was sitting on my desk one day with more than 50% charge and when I picked it up to make a phone call I noticed it was turned off. I tryed hitting the power button to turn it back on, but nothing happened. I have removed the battery and tried just about everything I could think of. Even when I plug the unit into the wall charger there are no indicator lights. I read on some threads that my battery may not have enough charge to begin charging (I know that makes little sense, but it is true) so I took the battery out and tested the voltage. It rated at 4.17 Volts which is higher then the 3.7 rating on the battery. This means the "jumpstart" or extra "kick" that would normally be suggested would not work for me since I have too much charge. I have begun discharging my battery and it is down to 3.99 Volts, but I don't really know if this would help anything.
If anyone has had a similar problem and has a solution I would really like to try it, I am willing to try anything at this point. I know I am new to this forum and this is my first post, but I discovered this site through Google and found it to be full of many interesting posts. If any of these solutions work I would be happy to make a donation to this site. I appreciate any and all help.
-TOM
Hi Flashrapid,
Have you tried a soft or hard reset? If the phone comes back on with either of these solutions then let me know as there is more to be done to stop this happening again in the future.
Feel free to PM me directly if it helps.
WB
Same problem here. I know this is an old thread, but Im having the same exact issue. Completly stock factory ROM very few 3rd party add ons never dropped.Phone was actually a 3 month old refurb that I had replaced another 8525 with under warantee. No charging lights or anything. Tried soft reset,not sure how to hard reset with the phone dead. Anyway if someone has any insight to this issue it would be greatly appreciated. Thanks in advance.
Hard reset as you normally would - 2 softkeys and stylus reset.
Does the red LED come on when you connect to the power without the battery?
The Hermes should, if there is no hardware problems, show a red light to indicate no battery when you plug it in without one.
Cheers...

HTC TYTN doesn't charge from USB and screen allignment problem

Since I bought it with the original WM5 ROM I had two most annoying problems with it (now I run WM6):
1) When I use the car charger it will only charge the first time I plug it in. If for whatever reason I unplug it and plug it again, the damn thing won't charge from the lighter charger. This is very frustrating as you can imagine since I use igo with the screen always on that drains the battery in a few hours + bluetooth consumption + the fact that phone itself rather old + the fact that igo doesn't save routes and I have to make my route all over again!
2) My screen gets missalligned extremly often! I mean like in a few tens of minutes I have to run Allign Screen again.
These are the main reasons that I stopped using it a while back, but now I need it badly for a long trip with my car. I tried to search this forum for these problems but I couldn't make head or tails of the search results. Do you know any quick fixes for these issues?
Thank you for your time.
There is a known issue where it will charge once off a lighter socket and not again unless it is switched off. A soft reset will start it charging again. (Bit of a pain).
The screen alignment issue is dealt with extensively in other threads.
Mike
So there is no workaround for the car charging issue as of yet. That is unfortunate. Thank you for your reply.
I have the same 2 problems on my TyTN (Hermes).
Right now I'm investigating the charging problem but so far without any results. As said before, a soft reset is right now the only way to get rid of it.
The screen alignment problems are most annoying since it happens a lot really. Seen solutions for that problem in other threads. Although I don't know if I really wanna risk taking the whole device apart myself...
For now I just realign when it happens (made a shortcut to access it fast).
i had a screen alignment prob but found out it was because of the firmware i had, i could not align at all was off by 5mm, what firmware did u flash it with?

Sonovabean Moto X Pure Not Charging, This is Such BULLSHIRT! (teehee)

I have searched and searched and searched, only finding unhelpful suggestions from people not too qualified to offer said unhelpful suggestions, haha. This bastard Moto X will not charge, regardless of charger/cable used (OEM Turbo and regular), no USB trickle charge, and I caved and got a new battery despite knowing better and it still won't charge. It stays on while plugged in and runs until the percentage reaches 0% (rate of discharge isn't always consistent). I've tried a whole host of dumb tricks like draining battery to 0%, selecting "Power Off" from fastboot, and holding Power/Volume Down for five minutes. Doing the latter seems to be the only thing that allows it to get a charge, but it's kind of wholly impractical to do that every day for who knows how long to make a difference. Also did complete factory reset and fresh reinstall of both factory and cm13 ROM and clearing ALL the caches, still to no avail.
So because it will slightly charge in the constant fastboot/reset process of holding Power/Volume Down, I've come to the conclusion that it's a kernel thing because of a damaged component on the board. Biggest issue is that the battery is reported as "Cold", with a general temperate reported by multiple utilities at -32 degrees. I can't upload screenshots at the moment, but TWRP reports system temp as a massive string that covers 2/3 of the bar up top. So for whatever reason the phone isn't getting a reading from the battery temperature sensor, and it's refusing to allow the battery to charge. I've been searching like crazy to find a way around this, be it editing the kernel to ignore temperature, or finding a schematic to know where to look for related circuitry responsible for this. I DID find a single component that has been broken from the previous owner tearing into it to replace the screen, but it's up near the button connector and just seems like an inefficient place to take anything relating to the Power IC. Regardless, since I can't find any way of identifying exactly what it is and what it does, I'm not sure how to handle this. Any flippin' suggestions?
tl;dr - I had pizza leftovers for breakfast and I regret it.
illitero said:
I have searched and searched and searched, only finding unhelpful suggestions from people not too qualified to offer said unhelpful suggestions, haha. This bastard Moto X will not charge, regardless of charger/cable used (OEM Turbo and regular), no USB trickle charge, and I caved and got a new battery despite knowing better and it still won't charge. It stays on while plugged in and runs until the percentage reaches 0% (rate of discharge isn't always consistent). I've tried a whole host of dumb tricks like draining battery to 0%, selecting "Power Off" from fastboot, and holding Power/Volume Down for five minutes. Doing the latter seems to be the only thing that allows it to get a charge, but it's kind of wholly impractical to do that every day for who knows how long to make a difference. Also did complete factory reset and fresh reinstall of both factory and cm13 ROM and clearing ALL the caches, still to no avail.
So because it will slightly charge in the constant fastboot/reset process of holding Power/Volume Down, I've come to the conclusion that it's a kernel thing because of a damaged component on the board. Biggest issue is that the battery is reported as "Cold", with a general temperate reported by multiple utilities at -32 degrees. I can't upload screenshots at the moment, but TWRP reports system temp as a massive string that covers 2/3 of the bar up top. So for whatever reason the phone isn't getting a reading from the battery temperature sensor, and it's refusing to allow the battery to charge. I've been searching like crazy to find a way around this, be it editing the kernel to ignore temperature, or finding a schematic to know where to look for related circuitry responsible for this. I DID find a single component that has been broken from the previous owner tearing into it to replace the screen, but it's up near the button connector and just seems like an inefficient place to take anything relating to the Power IC. Regardless, since I can't find any way of identifying exactly what it is and what it does, I'm not sure how to handle this. Any flippin' suggestions?
tl;dr - I had pizza leftovers for breakfast and I regret it.
Click to expand...
Click to collapse
DID YOU FIND A SOLUTION? I'm facing the same issues with my moto x pure edition (XT1575) after a screen replacement. Ampere aplication says the battery health is "Cold".
I never did, unfortunately. I tried a different battery in the event that some onboard IC was damaged, but it performed the same way. Whatever component was damaged seemed to be responsible for relaying pertinent information regarding battery temp readings; and without it the phone was getting that -32 reading which was beyond a safe/efficient range to allow charging (presumably). In my research, I think I remember it being possible that fiddling with the kernel itself to bypass battery temperature requirements is possible, but that's beyond my level of knowledge and runs the risk of being potentially unsafe since all it takes is one instance of getting too hot for the whole thing to go up in smoke. As frustrating as it is, it's not worth the potential damage to the device and/or home.
Not to say that your issue is the same as mine concerning cause, but the end result of how to bypass it would more than likely be the same :/
Same issue... Well... On my way to it.
I mean, my XT1575 will only charge if I lift the micro usb cable in a very very specific way. And everyday that passes, it's getting more a more difficult to find the right spot
DiegoMarinDiego said:
Same issue... Well... On my way to it.
I mean, my XT1575 will only charge if I lift the micro usb cable in a very very specific way. And everyday that passes, it's getting more a more difficult to find the right spot
Click to expand...
Click to collapse
I had that exact issue with the included 25W quick charger after a while. Switched to another charger and cable and the problem was solved for me.

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