So I've just acquired a Commtiva N700. It's been sitting in a desk drawer for several years, and the battery is completely flat.
When I plug it in to charge, the red power light comes on, but it remains completely unresponsive. It doesn't even show up as a USB device if I plug it into a computer. After a while the power light will start flashing irregularly. Even after being left like this for a while, nothing happens.
I've followed the suggestion on one of the other threads of taking the back off, disconnecting the battery, leaving it for a bit, reconnecting and charging. I just get a flashing red light again.
I'm suspecting that the battery is so flat that the charger circuitry is refusing to charge it because it thinks it's broken, thus rendering it a brick.
Before I bin it (not worth replacing the battery on a thing like this!) does anyone know if there's any last-ditch recovery I can try?
Related
Got a problem that I am hoping someone else knows how to solve:
Device: AT&T Atrix 4G stock 2.3.4 rooted (BL still locked)
Issue: Phone will not turn on or charge
Symptomshone suddenly turned off during a phone conversation the other day and now it will not turn on or charge. I noticed the phone was pretty hot when this occurred. Nothing happens when I hold the power button.I tried a new battery and same result. If I plug the moto charger in about half way I can get the green LED to come on but pushing in the rest of the way and it goes off and does not show battery image or moto screen. Plugging the phone into a PC causes a solid green LED. I have tried with a different charger (5.0V 2.1A) and same result as moto charger. If I plug in charger and then add battery and then hold power button it consistently will try to turn on (green led,screen powers up, and moto image for a second) and then it shuts off. I did this a bunch of times and noticed upper left corner of Phone getting warm (where the headphone jack is). I opened then phone up and didn't see any obvious problems. I bent a couple of the large spring pins around the headphone jack out for better connection and reassembled phone. Then it powered up like normal overnight but has been shutting off randomly. I was able to remove battery to get it to boot back up for a couple days but now it is dead again.
Any ideas? I am pretty sure I have a hardware or electrical connection problem. I really appreciated any guidance. Thanks.
so i had a not so nice scare last night. :crying:
TLDR:
when i attach magnetic charger, i now get blinking orange light and i get the charging (lightning) icon in top status bar also blinking also showing up and then disappearing.
I can apparently charge my phone via micro usb port directly but this morning phone alarm didn't go off and i couldn't get the phone to wake without powering off via red button and powering on again.
- How bad is this? (i.e. is it corrupt software? is hardware borked?)
- What can i do to determine cause (is there any kind of log file i can look at? etc)
I've been using a knock off magnetic charger adapter (one end is micro usb female, other end is magnetic charger port for Z2) since end august. pretty much every night i use this thing to charge my phone.
here is the item on ebay
Last night, as i was about to sleep, i connected my knock off magnetic charger thingy to my phone. i think i may have connected it upside down but then i fixed it.
I then left it for a bit then came back to check something on my phone and could not get the thing to wake up.
i tried to use the power button to wake phone to no avail.
I remove the magnetic charger clip thing and tried to power off phone using red button next to sim tray. no dice.
I tried plugging power into the micro usb directly and got a red light. At this point i start freaking out.
I start hunting through XDA and all signs point to potential soft brick.
So I try putting my phone into flashmode. I tried a bunch of things as recommended and somehow got my phone to wake again, but it got stuck in a boot loop at sony logo.
I use the red button to power off the device, wait for a bit and then power it back on.
luckily it boots into ROM and my phone looks as it should. I attempt magnetic charger but I get blinking orange led and the charging (lightning) icon in top status bar also blinking. I decide to try pluging the microusb directly into port on phone and it appears to be charging.
I decide to go to sleep.
In the morning my phone alarm didn't go off and i couldn't get the phone to wake without powering off via red button and powering on again.
All day today the phone was fine, but going to sleep now i'm going to charge direct via microusb and wondering what its going to be like in the morn.
- How bad is this? (i.e. is it corrupt software? is hardware borked?)
- What can i do to determine cause (is there any kind of log file i can look at? etc)
- any other recommendations?
thanks in advance
If the device powers off due to the charger then stop using it because it will damage your device and void your warrenty
Unbrick tutorial
http://forum.xda-developers.com/showthread.php?p=53220435
@envious: yea thats the thing. I'm not using the magnetic charger anymore.
i'm plugging into micro usb port.
this morning it was still normal at 8:15 (could wake it, unlock all things good, battery fully charged).
I have an alarm that goes off at 8:25.
I went back to sleep.
alarm did not go off. I woke up at 9 and my fone could not be woken. it was not off because if i hit power button it would vibrate, but i had to hard power off with red button and turn on again for it to be normal.
anybody seen this behaviour before?
well jsut a quick follow up. i uninstalled my alarm app and reinstalled it and now i no longer have any issue when charging via usb port.
still don't know if magnetic charger is completely eff-ed tho.
Hello,
My phone's battery was starting to have issues so I bought a new one and replaced it yesterday. I've done it recently on another phone (same model) so knew what I was doing when reassembling it, with the right adhesives and everything. Then I left it plugged for the night as this was advised by the new battery's seller. But this is what happens this morning when I try to turn it on:
- Phone doesn't vibrate when pressing the power button, neither when holding different combinations of Power + volume, etc.
- When I plug it this is what happens: imgur[dot]com/fByubwN The screen turns on as it would normally do, displays the 100% charged battery logo and then just dies (with the green led remaining). The only way to turn the screen on is to unplug and plug it again. But the phone itself isn't booting.
Any thoughts appreciated!
BassLH said:
Hello,
- Phone doesn't vibrate when pressing the power button, neither when holding different combinations of Power + volume, etc.
- When I plug it this is what happens: imgur[dot]com/fByubwN The screen turns on as it would normally do, displays the 100% charged battery logo and then just dies (with the green led remaining). The only way to turn the screen on is to unplug and plug it again. But the phone itself isn't booting.
Any thoughts appreciated!
Click to expand...
Click to collapse
I'd say that the battery is at fault. It can be two things:
- it is not correctly plugged (maybe the connector is not perfectly aligned, or one of the pins is bended)
- it is completely depleted, so won't charge at all.
Disconnect phone from charger and try to test voltage on the motherboard with a voltmeter. If you can't read anything, disconnect the battery and test it directly.
Personally I would say the first problem is more likely - a completely bricked battery is not that common.
Actually the battery was fine. I've opened it again and turns out I've kind of messed up with the flex connectors of the motherboard.
So I was able to boot it while it's open but as soon as I reassemble it, the controls are not detected anymore. It's a matter of millimeters, some parts probably don't sit properly, etc.
We spent some time on it with a guy at a local repair shop, the conclusion was that I had to get a new phone, or a new motherboard which is almost the same haha.
Thank you for taking the time to reply!
I recently picked up this galaxy s6 edge from a friend that upgraded to a new phone. It won't turn on, neither to android recovery, nor to download mode nor the android. I charged it via wireless charging overnight and i tried for around an hour with a usb cable. What do i do?
same issue i am facing, i tried original charger, wireless charger and fast chargers from many different brands. but all failed. The device only gets warm/hot while charging and nothing happens. neither download mode nor recovery mode works. I am kind pf stuck without any solution, my device was used very rarely and its like an brand new device. Doesn't know what to do, if you find any solution then please let me know too. thanks in advance
Same problem. If I press power button very long, blue light comes on. Then it's stuck and stays like this until battery is flat. Battery charging is not possible: device heats up (tried USB and Qi), but battery doesn't take any charge.
So I opened the S6 and checked the battery directly. I can charge it directly with a lab power supply and when I plug it in and press power button, the blue notification light comes on again until battery is empty again. I can also see that only ICs get hot, but not the battery when plugging in USB.
So, it's definitely some hardware fault. I suspect power IC that is not able to power up the screen. But I don't know. I will investigate further but it looks difficult. However, I have seen many YouTube videos with same symptoms, but problem was always different than mine :/
Hi guys,
This thread is 2 months old, any of you managed to fix the problem?
I am having very similar problem. My phone was on a shelf for about a year and a half. Before now it was working perfectly. Now I can't charge it via USB or power adapter. When trying to power it up or get into download or recovery mode, nothing happens. Computer does not see it. Tried different cables, USB ports, power adapters..nothing.
The only thing that is happening to the phone is the battery logo appears when trying to charge it, though the green bar does not go over battery, only the empty grey battery with lightning icon in the middle. Also the screen does not go dark after a few seconds as it should and the red/blue LED does not turn on.
Is this the signal from the phone, that the battery is to deeply dischareged and cannot be charged again? I am googling all over the web and can't find anybody talking about what phone does in case of to low voltage on battery.
PS back does not seem to be bloated, USB port was working perfectly last time used
Please try to help, you are my last stop before opening the phone and start probing the poop out of motherboard to see what gave.
EDIT: something interesting happened just about an hour after my post. The battery suddenly started showing % of charge and the green bar started running, computer recognized the phone.. as everything should be.
My FIX: leave the phone pluged in and charging for about 3days and it will start working again.
My semi professional explenation of fix and problem: the phone has a ''backup or reserve'' battery. It is actually main battery but the last I think I read somewhere it is 20% of capacity, is reserved for phone exclusively for the clock and all other electronics that need power when switched off. Now these 20% probably were discharged due to laying around for almost 2 years.
It took me 3 days of charging to fill up these ''20%'' I guess. Probably because Lithium batteries are charged VERY slow at very start and end. This is safty procedure for ALL Li batteries.
If any expert can confirm my conclusion please do so, to help other people.
To answer partialy to my question: The phone tells you battery is ''deep'' discharged when you only see the charge icon without the green bar.
In the mean time I was writing this edit I came up to 4% battery and turned it on!
BR Friend
Hi,
I had a Sony Z5 compact in a drawer for about 2 years, where the battery already was weak. I'd like to use it as a smarthome button panel where the bad battery won't matter, but I can't get it to turn on anymore.
When I first plugged it, the status LED switched to constant red. I unplugged it a couple hours later, just to find, that the LED stayed on even when unplugged. The device still was cold, so I don't think, that it really charged.
Since there was no reaction on the power button, I tried the "OFF"-button in the SIM slot. After reading on the internet, I held that button for 2 minutes. The phone vibrated every 15s, so it seemed alive. I then plugged in the charger, again the status LED turned constant red. This time the device got warm, seemingly charging.
After a couple of hours I tried starting it, but still, theres no reaction on the Power button. I again tried the OFF button, with no reaction whatsoever, not even vibrating anymore. Also the status LED shows no more reaction on plugging it in.
Is the device dead now? Anything I can try to get it working again? I don't need the battery anymore, Its supposed to spend its second life permanently plugged in.
best regards,
RockNLol
The usual advice is to make sure it is off (Hold power and vol-downup until it vibrates 3x / if really dead, just wait ~20s), and then leave it on a charger for a few hours. If that doesn't do it, your battery is toast.
Even if it is revivable, there is a chance that it is so weak that it will make the phone crash - the battery is used like a buffer even when on the charger, and if the phone needs high peak current, it will try to take it from the battery. If the battery is too weak, voltage will drop and the phone will crash.
In any way, I would not want a battery that is potentially damaged to be at the charger 24/7. If you deep-discharge a battery, it can form tiny little short circuits, and if you charge it, it can become a fire hazard. As in, burn your house down and release lots of toxic fumes while doing so.
If you are familiar with soldering, the best solution would be to open the phone, remove the battery, and replace it with a fake battery circuit. Obviously, don't do this if you aren't comfortable doing this kind of stuff, and always have a plan for what to do if the battery decides to light on fire.
For that, after you removed the battery, try to pry off the yellow tape on it, and get to the battery protection PCB near the connector. Carefully cut the leads to the actual battery and remove it (this is the most dangerous part). Then, solder a large capacitor across the battery leads and a connector for a power supply that can provide around 4V at, idk, 2-3A. There aren't many 4V power supplies, but a 5V one and a (silicon) diode in series work well (make sure the diode can survive a couple amps). Then, plug the fake battery back into the mainboard, fix everything in place using tape or glue, and see if it boots.
1ggn3 said:
The usual advice is to make sure it is off (Hold power and vol-down until it vibrates 3x / if really dead, just wait ~20s),
Click to expand...
Click to collapse
Power and Volume-Up?
Sure, one of the two
Power + Volume-down starts TWRP when the device is not running.
When the device is running, it takes a screenshot.