Develop Bugs

what does mean a very fast flashing red led

hey guys i just bought a new battery for my jasjar, the phone isnt booting even if the charger is plugged in, it only boot for like 6 seconds before it turn off again, even if i charged the new battery for 10 hours, even there is no orange led tell that the battery is charging... i plugged the phone into the USB cable with the pc and a fast flashing red light comes from the led (like 3 flashes per second) so what is the problem? is the new battery damaged or what? please help

djgaby said:
hey guys i just bought a new battery for my jasjar, the phone isnt booting even if the charger is plugged in, it only boot for like 6 seconds before it turn off again, even if i charged the new battery for 10 hours, even there is no orange led tell that the battery is charging... i plugged the phone into the USB cable with the pc and a fast flashing red light comes from the led (like 3 flashes per second) so what is the problem? is the new battery damaged or what? please help
Click to expand...
Click to collapse
In all probability you have received a deffective battery. Please obtain a replacement or refund.

djgaby said:
hey guys i just bought a new battery for my jasjar, the phone isnt booting even if the charger is plugged in, it only boot for like 6 seconds before it turn off again, even if i charged the new battery for 10 hours, even there is no orange led tell that the battery is charging... i plugged the phone into the USB cable with the pc and a fast flashing red light comes from the led (like 3 flashes per second) so what is the problem? is the new battery damaged or what? please help
Click to expand...
Click to collapse
red light means extremely low batt.....guess your battery is faulty

i got the same thing.
and no it's not the battery.
it's the charging circuit on the main hardware isn't working.
open your phone and check the five small wires that they connect the mini usb to the main mother board, one of them must be cut.

Ninlour said:
i got the same thing.
and no it's not the battery.
it's the charging circuit on the main hardware isn't working.
open your phone and check the five small wires that they connect the mini usb to the main mother board, one of them must be cut.
Click to expand...
Click to collapse
so, is there a solution to this? or there really is nothing more for the device but the trash bin or for spare parts?

Have you tried this?
http://wiki.xda-developers.com/index.php?pagename=UniversalBatteryIssue
If you already replaced the battery and nothing, and you want to get rid of dear Uni place it for sell in parts on marketplace, a lot of people will go for it!

djgaby said:
hey guys i just bought a new battery for my jasjar, the phone isnt booting even if the charger is plugged in, it only boot for like 6 seconds before it turn off again, even if i charged the new battery for 10 hours, even there is no orange led tell that the battery is charging... i plugged the phone into the USB cable with the pc and a fast flashing red light comes from the led (like 3 flashes per second) so what is the problem? is the new battery damaged or what? please help
Click to expand...
Click to collapse
I had exactly the same thing with my old battery,after my try to discharge it with a lil electro-motor. then i found a post of a guy with the same thing,who fixed it-by "zapping" the UNI battery with a 9V battery,connecting + to + and - to -,for a few second. I tried it without thinking twice. It worked for me. Dunno how and why,but it did. I use the battery again,normal. But beware,it is dangerous to play with this type of battery,it can explode. Do a search on this subject and you will see

I agree with keeping_sg
how long have you left your uni on the charger?
just plug it in and leave it on the charger all night and see what happens.

I bought yesterday a 4800mAh battery from Hong Kong... 10 euros included shipping + FREE black back cover

Good battery life but still prefer to carry 2 original sized batts rather than get that big one, making even bigger our Uni
Respectfully,

Yes, that absolutely means your battery is dead. Try charging for a few more hours and then turn on your PocketPC. If the error persists, try changing the battery.
Regards,
Carty..

Yes, that absolutely means your battery is dead. Try charging for a few more hours and then turn on your PocketPC. If the error persists, try changing the battery.
Regards,
Carty..

Blinking amber and green and not charging

My touch Pro2 is blinking amber and green when power off and when powered on Also blinks and will not charge.
Read some posts it says it overheating, not mine it cool to touch and works fine. I don't think its the charge port because when power off I insert cable and it will go to amber or 5 seconds then that blinking alternating amber green.
does anyone know where the power magement ic is located on the board.
I going to try reflowing the entire board, but if I knew where the pm ic was would try that 1st. thanks.
already reset phone so it's not software issue.

It's either overheating or your battery needs to be replaced.

Before you go tearing your device apart, you could simply try another battery or try charging the battery outside of the device. Occasionally, when the battery level drops too low, the device doesn't have enough juice to charge at all and will fall into an infinite boot loop. It's easier and cheaper to just try an outside source to eliminate the obvious answers first.

Xperia Play red light

Hi,
yesterday I bought a used R800i, the seller said I just need to charge the Battery. So back at home i plugged it to a charger an the LED near the power button startet blinking. First I thought it´s not a big deal but after a couple of hours it was clear that this is not alrigt. Even if i remove the battery the red light keeps blinking continuous (not 3 times or something similar, just every second once). I don´t know if it´s a software or hardware bug but could you help me to get it fixed?
best Regards
Lukas

It could be empty battery (but voltage level is not high enough to start charging).
Check with flashtool can you enter flash mode or fastboot mode (if you can, then it's probably empty battery)
If you can, check voltage level of battery with voltmeter.
It can be that motherboard is dead, but to be sure, you must know what is voltage level of battery.
For now, try leaving it charging, it might take some time (few hours or more) to actually start charging...
Sent from my R800i using XDA Free mobile app

Over USB i only get unkown device, but USB with the Test Point works, measuring the Batter was 0 Volts but charging over hours didn´t help

Lukas94 said:
Over USB i only get unkown device, but USB with the Test Point works, measuring the Batter was 0 Volts but charging over hours didn´t help
Click to expand...
Click to collapse
If battery have 0 volts then it's dead and (most likely) can't be charged anymore. You need new battery, so you can know is motherboard is working or not.
But that is just my opinion, and i could be wrong...
Maybe to try and charge battery from external source of 5V power , easiest way is cut some usb cable or take two wires from PC's molex connector (red is +5V, black is GND) and charge it for shortly (about 30sec-1min) and measure does it have at least 3.2V. Repeat short charging untill it does. If it stay on 0V then is dead for sure.

I was really able to charge the battery over a cut USB cable. I got it to boot until lookscreen (digitizer does not response) but then the battery turned hot and the Xperia shut down. I ordered now a new battery then it should work again

Lukas94 said:
I was really able to charge the battery over a cut USB cable. I got it to boot until lookscreen (digitizer does not response) but then the battery turned hot and the Xperia shut down. I ordered now a new battery then it should work again
Click to expand...
Click to collapse
Digitizer not working could be faulty slider-flex cable or simply software error due overheating. You'll know with new battery...

Flex Cable looks like this, should I get a new one?
https://www.dropbox.com/s/mixy0lczvb3hb3c/IMG_20140912_201712.jpg?dl=0

Lukas94 said:
Flex Cable looks like this, should I get a new one?
https://www.dropbox.com/s/mixy0lczvb3hb3c/IMG_20140912_201712.jpg?dl=0
Click to expand...
Click to collapse
Yes, that's slider flex cable.
But wait untill you get new battery. Then you'll know does it have more problems or it is working normally

Sad News, today I got the new battery and i was even able to boot up the phone, but like the last time i was able to boot it up the battery and the mainboard got hot. I think the loading circuit is broken. So there are two options 1. buy a external charger for the batterie or 2. sell the phone as rarely used on ebay
No really I´m selling it, even if i get a charger theres also the problem with the not working digitzer. Thanks for your Help but this is ways to big for me.
Regards Lukas

Lukas94 said:
Sad News, today I got the new battery and i was even able to boot up the phone, but like the last time i was able to boot it up the battery and the mainboard got hot. I think the loading circuit is broken. So there are two options 1. buy a external charger for the batterie or 2. sell the phone as rarely used on ebay
No really I´m selling it, even if i get a charger theres also the problem with the not working digitzer. Thanks for your Help but this is ways to big for me.
Regards Lukas
Click to expand...
Click to collapse
Sorry to hear that. Obviously problem is much bigger and hard to tell what is wrong without some proffesional look into it (lot of reasons for phone to get hot by itself - there is short circuit somewhere and that's why it's draing battery fast and causing overheating). I don't think external charger will solve problems.
Anyway, good luck :good:

Only blinking red led on charging after changed battery

Hi, I changed the battery of z1c, but when I try to charge it, red leds flash and the phone cannot charge and turn on.
What should I do?

Open the phone and connect the battery or change it, it might be a bad one.

NRG-R9T said:
Open the phone and connect the battery or change it, it might be a bad one.
Click to expand...
Click to collapse
I've fixed it by checking the battery connector, a piece inside was folded.

Hey guys, I have the same issue. Is it just the new battery **** or I to do smthg to charge it ? I've only got this red light flashing.
When I put back the old battery it is all OK ant the phone starts and charges correctly. But with the new battery I've only got this red light flashing.

Red led of death

Hi all, my Nexus 5x wont charge but Red led is blinking and then nothing happens, I broke the originale LG type c cable and I left the phone discharged for 5-6 days until the new cable come, and now It wont boot nor charge with no cable or Wall charger combination, searched on web and found people saying to let It in charger overnight then try booting and similar things but nothing is working.
anyone here got this problem?:crying:

Hi, I had the same issue... and charging overnight will not fix your problem....
it happened 5/6 times to my phone, the only way to make it works, was to pull out- pull in the original charger, and after 10/20 times you do this, it will work again.
I bring it to LG assistance and they told me that sometimes, all the updates and the full memory (mine was not full, but 17gb over 32) made this. I didn't believe that, BUT an hard reset of the phone and it never happened again in 3 months
Hope it will work for you too

dimostar said:
Hi, I had the same issue... and charging overnight will not fix your problem....
it happened 5/6 times to my phone, the only way to make it works, was to pull out- pull in the original charger, and after 10/20 times you do this, it will work again.
I bring it to LG assistance and they told me that sometimes, all the updates and the full memory (mine was not full, but 17gb over 32) made this. I didn't believe that, BUT an hard reset of the phone and it never happened again in 3 months
Hope it will work for you too
Click to expand...
Click to collapse
Thanks, I will try, but how much time do I have to wait before pulling out and pull in again the charger?

Can anyone help me please?

I had the same. I forget about phone and left it with TWRP running. It drained all my battery and phone wont turn at all. I had this same red LED, so i plugged phone to charger and after maybe 2 hours it turned back on (charging screen), wnother hour and my nexus was fully restored with full charge.
Also i recommend you to get original charger and original usbc cable. Also before it you can hold power button for 30 sec. In some Xperia phones even a few days can do a trick.

Finally understanded the problem Thanks to "Dusan Milanovic"
In my case it was:
- 50% Battery problem
- 50% Qualcomm Power IC Chip
How I solved it:
I AM NOT RESPONSIBLE FOR EVERY DAMAGE YOU MAKE TO YOUR PHONE, HOUSE, GRANDMA.
REQUIREMENTS:
- Alluminium foil (biscuit metallic paper) not plastic
- Hairdryer (It seems stupid ahah)
- Chronometer
- Attention!
- A bit of patience
BATTERY PHASE
- Open the Phone and remove Fingerprint board.
- Remove the Battery.
- Put the battery on an universal charger.
(do this only if you are sure that the battery is discharged and don't want to charge)
Let it charge for an hour more and less.
POWER IC CHIP. PHASE
- Remove the metallic protection between the camera and the battery slot.
- Look for a black chip surrounded by little grey chips. (POWER IC)
- Protect everything in the motherboard with the Alluminium foil except for the black chip.
BE VERY CAREFUL, PROTECT EVERY SINGLE GREY CHIP NEAR THE POWER IC CHIP.
-Prepare the Chronometer 1 minute.
(NOT MORE THAN 2 MINUTES OR YOU MAY SERIOUSLY DAMAGE THE MOTHERBOARD)
-Use the Hairdryer to heat the POWER IC CHIP
(DO NOT USE HEATGUN). The chip needs to reach around 100°C
-After you heated the chip let it cool down for a minute or two
-Remount the metallic protection.
LAST PHASE
- Put the battery on the phone
- close everything
- Try to boot it
ALL DONE?:highfive:
POSSIBLE PROBLEMS
- always shows 100% battery. → buy a new battery( this one is Dead)
-Doesn't boot.↓
→Are you sure your battery is charged?
No: charge it externally (BE VERY CAREFUL THIS COULD BE VERY DANGEROUS)
Yes: then try to heat again the POWER IC CHIP (2 MINUTES MAX)
→Still nothing?
- Buy a new Battery, this is the best choice.
- If even after you use the new Battery the Phone doesn't boot , just heat again that pain in the ass of a ic CHIP.

MounirHero said:
Finally understanded the problem Thanks to "Dusan Milanovic"
In my case it was:
- 50% Battery problem
- 50% Qualcomm Power IC Chip
How I solved it:
I AM NOT RESPONSIBLE FOR EVERY DAMAGE YOU MAKE TO YOUR PHONE, HOUSE, GRANDMA.
REQUIREMENTS:
- Alluminium foil (biscuit metallic paper) not plastic
- Hairdryer (It seems stupid ahah)
- Chronometer
- Attention!
- A bit of patience
BATTERY PHASE
- Open the Phone and remove Fingerprint board.
- Remove the Battery.
- Put the battery on an universal charger.
(do this only if you are sure that the battery is discharged and don't want to charge)
Let it charge for an hour more and less.
POWER IC CHIP. PHASE
- Remove the metallic protection between the camera and the battery slot.
- Look for a black chip surrounded by little grey chips. (POWER IC)
- Protect everything in the motherboard with the Alluminium foil except for the black chip.
BE VERY CAREFUL, PROTECT EVERY SINGLE GREY CHIP NEAR THE POWER IC CHIP.
-Prepare the Chronometer 1 minute.
(NOT MORE THAN 2 MINUTES OR YOU MAY SERIOUSLY DAMAGE THE MOTHERBOARD)
-Use the Hairdryer to heat the POWER IC CHIP
(DO NOT USE HEATGUN). The chip needs to reach around 100°C
-After you heated the chip let it cool down for a minute or two
-Remount the metallic protection.
LAST PHASE
- Put the battery on the phone
- close everything
- Try to boot it
ALL DONE?:highfive:
POSSIBLE PROBLEMS
- always shows 100% battery. → buy a new battery( this one is Dead)
-Doesn't boot.↓
→Are you sure your battery is charged?
No: charge it externally (BE VERY CAREFUL THIS COULD BE VERY DANGEROUS)
Yes: then try to heat again the POWER IC CHIP (2 MINUTES MAX)
→Still nothing?
- Buy a new Battery, this is the best choice.
- If even after you use the new Battery the Phone doesn't boot , just heat again that pain in the ass of a ic CHIP.
Click to expand...
Click to collapse
I followed you steps and successful got it to work , but now it is showing that charger is pluged in but not charging, the charging symbol comes bit of does not charge , I even went into cpuid and saw that the status was not charging but plunged in ac power , I am ready to buy a new a battery but will it solve my issue of is it a pin connector issue

dimostar said:
Hi, I had the same issue... and charging overnight will not fix your problem....
it happened 5/6 times to my phone, the only way to make it works, was to pull out- pull in the original charger, and after 10/20 times you do this, it will work again.
I bring it to LG assistance and they told me that sometimes, all the updates and the full memory (mine was not full, but 17gb over 32) made this. I didn't believe that, BUT an hard reset of the phone and it never happened again in 3 months
Hope it will work for you too
Click to expand...
Click to collapse
MounirHero said:
Thanks, I will try, but how much time do I have to wait before pulling out and pull in again the charger?
Click to expand...
Click to collapse
I got the same issue tried changing battery but nothing changed
When phone turns on backup your files when you are in time

dimostar said:
Hi, I had the same issue... and charging overnight will not fix your problem....
it happened 5/6 times to my phone, the only way to make it works, was to pull out- pull in the original charger, and after 10/20 times you do this, it will work again.
I bring it to LG assistance and they told me that sometimes, all the updates and the full memory (mine was not full, but 17gb over 32) made this. I didn't believe that, BUT an hard reset of the phone and it never happened again in 3 months
Hope it will work for you too
Click to expand...
Click to collapse
HARD RESET instructions or link you followd that worked drop below

I just had the same thing happen. Using the original charger I kept on charging then trying again and again. I would leave it overnight unplugged from the charger. I think the battery was draining due to screen not coming on but phone booting over and over. Finally after about 6 times, I saw a battery symbol, then pressing power it came on as if everything was just fine.

I found another way, though be careful. Repeatedly unplugging/replugging did not help. Disassembled phone (lots of guides), unplugged battery. Measured 2.96v - too low for lipo. Used lipo charger (100mah) to boost charge to 3.2v. Reassembled, and it charged OK.
Cause is probably voltage dropped below the low charge threshold for lipo charging cct onboard. Lipos are very tricky to charge - lots of papers on this. In theory Nexus should have shut itself down before voltage dropped that low - but it didn't. Design flaw.

i had red blinking but battery was empty.
since in bootloop it will not charge, after i repaired reflow and patched the boot
to 4 core it worked perfect.
so if someone comes here and wonders, it might not be the charging chip
just the battery empty