[Q] LG500h shuts down even if plugged in wall charger - General Questions and Answers

Hi
I noticed a strange thing about LG Optimus One (500h):
Even if the phone is plugged into a wall charger or PC when running power hungry
app (wi-fi hotspot) the battery initially at 100% keeps DISCHARGING! even being supplied external power all the time!
What happens in 3-4 hours it completly dies and until charged you can't turn phone on.
My guess is that the phone still uses battery power even when the external power source is present, and power from usb only goes to charging circuits, and not to the rest of the unit.
Seems that it always needs battery.
Just tested, powered up once without battery (have to hold power button for 10 secs) and then shuts down anyway upon getting home screen.
It indicate some kinda bug or indecision by engineers, firmware boots OK, but once Android has booted it's says "No, need battery to work", so it might be
software fix.

Related

[Q] Inspire 4G flashes full battery screen when plugged in, won't turn on.

I plugged my phone in last night and when I woke up today it was off. I pulled out the charging cord and held the power button with no effect. Thinking the cord may have slipped partly out and let the phone die, I plugged it back in and was greeted by the battery charging screen, showing full charge. I pressed the power button and the phone went black. On further investigation, it seems my press of the power button didn't have to do with it turning off, as whenever I plug it in it shows the full battery screen for a couple of seconds before turning off again. If I unplug it and plug it back in it just repeats this. I've reseated the battery, I've tried holding volume down and the power button, and nothing's changed the phone's behavior. The phone is completely stock, and never opened beyond the battery and card doors.
It's pretty old and I'm pretty sure I do have an upgrade available, so I'm not too upset if I have to buy a new phone, but I'd like to confirm that it is FUBAR before I go that far, and I'd like to be able to extract my data if possible. Any suggestions would be appreciated.
unhh said:
I plugged my phone in last night and when I woke up today it was off. I pulled out the charging cord and held the power button with no effect. Thinking the cord may have slipped partly out and let the phone die, I plugged it back in and was greeted by the battery charging screen, showing full charge. I pressed the power button and the phone went black. On further investigation, it seems my press of the power button didn't have to do with it turning off, as whenever I plug it in it shows the full battery screen for a couple of seconds before turning off again. If I unplug it and plug it back in it just repeats this. I've reseated the battery, I've tried holding volume down and the power button, and nothing's changed the phone's behavior. The phone is completely stock, and never opened beyond the battery and card doors.
It's pretty old and I'm pretty sure I do have an upgrade available, so I'm not too upset if I have to buy a new phone, but I'd like to confirm that it is FUBAR before I go that far, and I'd like to be able to extract my data if possible. Any suggestions would be appreciated.
Click to expand...
Click to collapse
If you have access to another battery, you could try that, but since you're seeing the full battery symbol I'm guessing that that's not the issue. You can always recover your sdcard data by putting it in a card reader, but the phone's apps, app data, and settings may be more difficult.
Well, turns out the problem was much less serious than I thought: my charging cord has bitten the dust. I'm not sure why I've been seeing the full battery, but when I took it to the AT&T store, the person who helped me plugged it in and it started right up. I just need to get a cable that's not my years-old piece of crap that came with the phone.

Moto G doesn't charge or power up

I'm sorry if this topic has been discussed so many times, but I couldn't find symptoms like the ones my Moto G has.
Two weeks ago, my Moto G reached out to 0% and shuted down. After that I've tried the following possible fixes:
Leave the phone out a day off the charger and then charging it for 3-4 hours or even all night long.
Pressing the power button for several minutes while connected to the wall charger.
Connecting it to several chargers (750, 1500 and 2000 mah).
Taking out the battery cover, disconnecting the battery flex and then reconnecting it.
A few things I noticed were that my phone came with a 450 mah charger in the box, and when I connect the phone, the LED light lits continuosly and it never goes off.
When I tried with 1500 and 2000 mah chargers, the LED lits too, and while pressing the power button, the LED light flashes one time after 2-3 minutes, and then flashes again after 5-6 minutes. But these flashes are very glimmer. And no matter what I do, the screen never lights up, and the LED light never goes off.
Please, I desperately need your help. I bought this phone two months ago and I've unlocked the bootloader, so I don't think warranty will cover the phone.
Thank you very much.
if you press power + vol down does the phone goes to recovery? i figured out that even if the phone does not boot you can go to recovery (or is it bootloader?) and than go to barcodes and press vol up. some codes will show up. after a min or so it will turn off. repeat this until the phone wont even boot to recovery. now plug it in the charger and hold power button for 2-3min and than leave it charging for an hour and than try to power it up. if it will not work try to unplug it and plug it in again after a minute and than hold the power button again for 2-3min and leave it charging for an hour again. i got my moto g booted after few tryes.
it seems that moto g wont charge until the battery is completely drained.
I'm sorry but the phone won't boot into bootloader mode neither. Are there any other recommendations? Thanks for your reply.
EDIT: I'll see if I can record a video of the phone's behavior. Maybe it could help.
How to resolve this dead battery issue...
rodrigojfuentes said:
I'm sorry if this topic has been discussed so many times, but I couldn't find symptoms like the ones my Moto G has.
Two weeks ago, my Moto G reached out to 0% and shuted down. After that I've tried the following possible fixes:
Leave the phone out a day off the charger and then charging it for 3-4 hours or even all night long.
Pressing the power button for several minutes while connected to the wall charger.
Connecting it to several chargers (750, 1500 and 2000 mah).
Taking out the battery cover, disconnecting the battery flex and then reconnecting it.
A few things I noticed were that my phone came with a 450 mah charger in the box, and when I connect the phone, the LED light lits continuosly and it never goes off.
When I tried with 1500 and 2000 mah chargers, the LED lits too, and while pressing the power button, the LED light flashes one time after 2-3 minutes, and then flashes again after 5-6 minutes. But these flashes are very glimmer. And no matter what I do, the screen never lights up, and the LED light never goes off.
Please, I desperately need your help. I bought this phone two months ago and I've unlocked the bootloader, so I don't think warranty will cover the phone.
Thank you very much.
Click to expand...
Click to collapse
Answer.....I have exact similar problem for last one week and i figured it out how to recover..u have to leave the phone for 24 hours to discharge and then open the battery...See youtube tutorial how to open it....
then go to any local mobile repairing shop and ask him to charge or boost your battery..they have some kind of boost machine..ask them to do it for 10 min the put on the battery and hold the power button led will blink 3 times put the phone in charge i guarantee you u ll get ur moto g back....i have also sucessfully removed the outer glass from digitizer,,...but that another story...hope i helped you...
I recently ran into this... I let my XT1032 battery deplete to 0% and then had a difficult time getting it to recharge.
When the phone was plugged in to any of these:
- my desktop PC
- powered USB hub
- game console USB port
it powered on briefly and showed the white screen with 0% battery indicator. The screen would then go blank and then after a few minutes the phone would boot successfully to my lock screen. However, it seemed to stop taking charge at this point and after a few minutes would shut itself down again. And the cycle would repeat.
I was able to get it to boot to the bootloader through normal means (Vol. Down + Power). But it behaved similarly in that it seemed to stop taking a charge and so after a few minutes it would power down as the battery ran out. And the cycle would repeat.
What finally worked for me was to use a different charger (and cable). I ended up using the charger that came with my tablet (Nexus 7) and the phone charged up the battery without issue -- I'm not sure whether the charging cable made a difference.
There's some discussion here:
http://androidforums.com/threads/moto-g-died-and-now-wont-charge.837568/
that suggests that when the phone hits 0% battery, it becomes fussy about the charger and that a high charging current is required or else the charging circuit shuts down.
My experience would support that theory. Seems a rather dumb design on Motorola's part...
Lesson here is to not let your device run down to 0%!

Hardware Issue - Solid Red Light with Battery, Power Cycle without

Hello All,
I hope this is the best forum, but please give me advice if it is better somewhere else.
I recently dropped my Nexus 5, cracking the screen. I am fairly DIY, so I ordered a new screen on eBay. Although I had never opened the Nexus 5, I followed some online guides, and I thought the process went fairly smoothly. However, after it was all assembled, the phone was completely dead. I switched back to the old screen, still dead. I picked it up to try again. I can put the phone in to the following states (with the back cover off):
Battery Connected, USB Power - Solid red light. Unresponsive. Power + Vol- just cycles red light
Battery Disconnected, USB Power - The screen powers on, shows the "starting to charge" logo. The device power cycles approximately every 5 seconds. Holding the power button will show the Google logo (aka, startup), but continues to power cycle every 5 seconds.
Battery Disconnected, USB Power, then battery connected - With the battery disconnected, it will show the charging screen. I can then connect the battery and completely start it. The device appears to be fully functional (sans the rear speaker, but I am not concerned about that at the moment). The battery always indicates 0% (Unknown). However, if I unplug the USB power, the device will stay powered.
Any ideas on what the issue could be? Bad battery? Bad main board? Or, ideally, a loose connector.
Any insight would be appreciated.
Dan
Update: I am unable to replicate the red notification light. Now the phone is unresponsive if the battery is connected.
Could be anything really. Only a professional would know what's the issue after examining the device.
PS: Questions go in QnA and not in General.

Nexus 5 won't boot, 8 blinks

I have never had any problem with my Nexus 5. It is now my standby device. Accordingly it doesn't get used much. One day I left it ON and didn't use it for 2 weeks. When I picked it up again it was OFF and didn't want to turn on. Naturally I thought the battery had drained and put it to charge.
Instead of the battery symbol on the screen (indicating it is being charged), I get a sequence of 8 red blinks on the bottom notification light (which is just above the charging port), each blink lasting 0.5 seconds, then 0.5 seconds off (so total duration of blinking sequence is 8 seconds), then 1.5 seconds off, then blinking sequence starts again.
I left it connected to the charger for 2 weeks. Nothing changed.
I then replaced the battery with a brand new OEM battery, same thing again.
I cannot get into recovery mode nor is the phone recognised when I connect it to the PC.
Any ideas? Anyone knows the meaning of this blinking sequence?
nitonreu said:
I have never had any problem with my Nexus 5. It is now my standby device. Accordingly it doesn't get used much. One day I left it ON and didn't use it for 2 weeks. When I picked it up again it was OFF and didn't want to turn on. Naturally I thought the battery had drained and put it to charge.
Instead of the battery symbol on the screen (indicating it is being charged), I get a sequence of 8 red blinks on the bottom notification light (which is just above the charging port), each blink lasting 0.5 seconds, then 0.5 seconds off (so total duration of blinking sequence is 8 seconds), then 1.5 seconds off, then blinking sequence starts again.
I left it connected to the charger for 2 weeks. Nothing changed.
I then replaced the battery with a brand new OEM battery, same thing again.
I cannot get into recovery mode nor is the phone recognised when I connect it to the PC.
Any ideas? Anyone knows the meaning of this blinking sequence?
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Click to collapse
what is the current state of the phone? do you just get the blinking when charge cable connected? no boot loop ?
So currently the phone doesn't switch on and cannot be charged it would seem.
There is no bootloop.
And yes, the blinking only goes on whilst a charging lead is connected or whilst it's on a wireless charging cradle. No blinking when removed from the charger.
nitonreu said:
So currently the phone doesn't switch on and cannot be charged it would seem.
There is no bootloop.
And yes, the blinking only goes on whilst a charging lead is connected or whilst it's on a wireless charging cradle. No blinking when removed from the charger.
Click to expand...
Click to collapse
you said you replaced the battery , I would check that connection , try removing the battery if possible and reconnecting it. Try the old battery too if you still have .
In my experience i'v seen that blinking light in other devices when they overheat.
I only replaced the battery because of the blinking problem as I suspected a deep discharged battery. Anyway the connections are good. 100%.
I never had overheat issues on my N5 as it was just used for basic functions, no gaming etc. I wouldn't imagine the device had overheated while it was left unattended on my desk, and there definitely is no overheating happening now as it doesn't even switch on...
nitonreu said:
I only replaced the battery because of the blinking problem as I suspected a deep discharged battery. Anyway the connections are good. 100%.
I never had overheat issues on my N5 as it was just used for basic functions, no gaming etc. I wouldn't imagine the device had overheated while it was left unattended on my desk, and there definitely is no overheating happening now as it doesn't even switch on...
Click to expand...
Click to collapse
sounds like your hammerhead finally checked out ... the old saying goes " if you don't use it, you lose it " .... try all combinations like hold power and volume down at the same time for 10 seconds , power and volume up ..etc
other than that i'd take a multi meter and make absolute sure you have power to the motherboard , then if you still do, it could be a short ..
if you want to go even further, a complete tear down of the phone, check for corrosion ( whitish residue on terminals and motherboard ) clean off with toothbrush only ( no water or liquid of any kind ) be careful removing ribbon cables and re-inserting them ... you can find lots of stuff on youtube for that.
good luck

Battery won't boot or charge after battery replacement

I just replaced the battery as well as both the fingerprint reader and the charging port board. Of course many potential problems with a tripple-fix like that but I actually think I got it right!
Now it appears as the new battery is fully drained and I can't get the phone to boot – not even into Recovery. It doesn't seem to take any charge either.
The bootloader is unlocked and rooted (Magisk) and has TWRP and Lineage 17.1 installed.
When connected to charger, red LED starts blinking but the screen stays black.
After 45 seconds the LED turns off.
Intermittently starts blinking again.
Restarting with VOL DOWN + POWER BUTTON doesn't work
It does vibrate after 12-15 seconds but then nothing.
VOL DOWN -> adding POWER BUTTON, then releasing POWER at vibration doesn’t work either.
Resetting battery calibration according to htc-instructions didn't do anything either
VOL UP + VOL DOWN + POWER for up to 2 minutes
(https://www.htc.com/us/support/htc-10/faq/what-should-i-do-if-my-phone-will-not-charge.html)
Had it connected to charger for several hours without any result
Had it connected to USB 2.0-port on computer for several hours without any result
Read somewhere that a drained battery might have a hard time receiving the high current from a charger but could work with the relatively weak charging from a USB 2.0-port. (couldn’t find the source right now..)
Wondering whether the battery has been put into "sleep mode" by its protective circuit built due to too low voltage, as described in this thread:
SOLVED: Device will not power on after battery ran dry? - HTC One M8
Have you tried to reset the charging logic of the device, first you must charge your M8 for a minimum of 10 minutes using a wall charger. With the power off, press down and hold the volume up and down button with the power button for approximately 2 minutes. After 2 minutes, release all of...
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