Hello. Does anybody know the location of the power managment ic? I have an issue, when connected to charger, it will charge for a split second then stop, then start again. Never charging. It is not the port, as I can move the cable around, and it will not affect the charging.
I have seem the power port, and it has some ic's on it, but I am not sure if one is the power management ic. If it is changing the port should work.
liquidzorch said:
Hello. Does anybody know the location of the power managment ic? I have an issue, when connected to charger, it will charge for a split second then stop, then start again. Never charging. It is not the port, as I can move the cable around, and it will not affect the charging.
I have seem the power port, and it has some ic's on it, but I am not sure if one is the power management ic. If it is changing the port should work.
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When you plug the cable into the phone does it sit in the hole tightly or can you wiggle it a bit?
If it wiggles you have something like lint stuck in the port. Power off your phone and dig around in the port with a sewing needle to remove the obstruction.
I have opened the phone, damaged a corner of the screen in the process, and found that it is the connector that goes from the power port to the main board. If I apply pressure it will charge without blinking. I have ordered a new power port board, and sadly now I have to find a new lcd.
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My Galaxy SII now is out of battery (state off). I could not charge or turn it on.
When I connect it to charger or USB cable, it starts up, then home screen appears and it just alert 'Batter critically low' and turn off automatically. This action (startup and off automatically) repeats every several seconds if the charger or USB cable is still connected.
Here are what I have tried:
- Test my charger and USB cable with other device and it works fine (charger and USB cable are also original ones).
- Use another battery
- Upgrade and downgrade OS (Gingerbread, ICS)
Please provide me some advices.
Thanks.
clean the micro usb port of the phone with a can of compressed air and try charging again. if it doesn't work even after that, then u'll have to get ur micro usb port changed.
I have a similar issue at the moment, except I get different things with different chargers. It's a usb flex issue. Which means that it needs replacing.
Sent from my GT-I9100 using xda app-developers app
i had similar but please only do this if you're brave or are planning to replace the usb/charge port.
inside the charge port you'll see a flat gold coloured tab. with a small flat blade screwdriver, gently nudge it upwards, i.e. towards the screen. then try a charge, if no joy, nudge it a bit further.
this worked for me twice. but at you're own risk etc. good luck.
move to Q&A maybe? ...
As above really its not my tab so i know nothing apart from it stopped charging. USB port was damaged so i replaced the port and battery with genuine samsung.
I have a Choetech micro usb lead that displays current Amps and Voltage. When plugged in its at 5.06v 0.00a. When i hold the power button the voltage goes to 4.97v and 0.16a so its drawing power just wont turn on!
My wife's Nexus 5X became a teething toy for our 9 month old and shortly thereafter stopped charging. I tried connecting to power sources and USB with no luck - when connected to my Win 10 desktop it said Power surge on the USB port – Unknown USB Device needs more power than the port can supply.
I managed to get most of the full res photos off the device by uploading via FTP to my NAS. Wondering what I might be able to do to get the rest of them off. I tore down the phone, tried disconnecting the battery and seeing if it would run off the power (if the battery was corrupted or something) but no luck.
A long while ago, while attempting recovery to USB stick for a different phone, I worked with a DC power generator - soldered wires to the terminals on the battery, adjusted the voltage, and was able to power the phone indefinitely while connecting a USB stick to the USB port. I'm thinking about giving something similar a try here - not sure if anyone would be able to tell me anything that might cause difficulties here. I believe the power terminals are marked on the battery, as is the voltage at 3.8v DC, so I would think it should be pretty straightforward.
I guess if someone has a spare Nexus 5X and is feeling brave, if you could open it up, disconnect the battery, plug a power cable in, hit the power button, and let me know if it boots, that would be a start. If the device will work with no battery, just power via AC, then mine's pretty well fried and the DC power option might be my only route. If the device won't power on without a battery, maybe it was just the battery that went bad, and I could try a replacement for $10-15 to see if that resolves.
edit: additional info. If I plug the phone into an AC port, the area where the connector plugs into gets super hot and there's a red light in the microphone grill that starts blinking. Not sure if something got shorted by the charging port (where baby got her drool) or if the battery kicked it and is causing some issue with the charging circuit.
Thanks!
Well, found the LG charger and gave that a try. Looks like it might actually be charging now. The charging port is nowhere near as hot when using the original charger, so...going to let it sit for a bit and fingers crossed I'll have a working phone in a few hours to try to copy off the stuff i couldn't get before the battery died.
Hello guys,
I have replaced my battery today, but it seems as I was struggling to remove the glue I have ripped the side buttons ribbon cable a little, therefore the power button is not working and I can't power on the device.
When I plug it in a computer, I can see it charging. In device manager it is showing up as DVD Device - HTC Android Phone USB Device and as a USB Mass Storage Device. I have tried fastboot and adb and they are not responding.
I only want to power on the device, so I can use it, because for a new cable to arrive it will take like two months.
Any help is appreciated.
Thank you in advance.
EDIT: This is the part where it got ripped.
As I was looking for a cable from ebay, I noticed something. The cable there on the bending has only one track!
The first thing I immediately tried was touching the two parts of the cable to try to reconnect it, so I can at least power the phone on, but it didn't work.
What I was also thinking is to put some kind of conductor between the rippage, but I thought there were more than one path on the circuit and that I can put electricity where I don't want it.
Now, looking at this one circuit path do you think putting a solder wire in between could transfer the power up signal? Or is it not a good idea? Is it possible that there are more connections inside beside that track?
P.S: I am not a very good electrician, I have soldered some pins, but I really have no deep knowledge in that area.
EDIT: I have fixed this by buying a new module from ebay and replacing it.
My P605 has no sign of life.
Internal charger doesn't seem to be working at all. So I've charged the battery with my bench power supply, resoldered the battery connector. Measured the connector on the board and it shows battery voltage. When connected through a USB power monitor the device doesn't seem to draw any power whatsoever though.
Is there some common hardware problem I should be looking at apart from dead battery/bad battery connector?
I do have a hot air rework station, fairly decent soldering skills, bench supply and oscilloscope but nothing super fancy,.
Anduhroid said:
My P605 has no sign of life.
Internal charger doesn't seem to be working at all. So I've charged the battery with my bench power supply, resoldered the battery connector. Measured the connector on the board and it shows battery voltage. When connected through a USB power monitor the device doesn't seem to draw any power whatsoever though.
Is there some common hardware problem I should be looking at apart from dead battery/bad battery connector?
I do have a hot air rework station, fairly decent soldering skills, bench supply and oscilloscope but nothing super fancy,.
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The usb assembly tends to fail & can be cheaply replaced, but as you already charged the battery externally, there must be another problem.
I found it difficult to attach the connector of my new battery, required a lot of pressure, and to arrange the battery cable such that it won't push up the connector. There was hardly room for the battery cable, as it was two or three millimeters longer & the wires quite stiff.
lecorbusier said:
The usb assembly tends to fail & can be cheaply replaced, but as you already charged the battery externally, there must be another problem.
I found it difficult to attach the connector of my new battery, required a lot of pressure, and to arrange the battery cable such that it won't push up the connector. There was hardly room for the battery cable, as it was two or three millimeters longer & the wires quite stiff.
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I will check the USB assembly just in case it might affect something. Better to be safe than sorry
What would be super useful would be a schematic/diagram, but I guess that there is no maintenance/service manual available anywhere is there?
Fugget about schematics etc.
The usb assy costs less than $10€,fortunately, but also contains the buttons and leds, which makes replacement a bit more complicated.