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mercredi 26 août 2015

N910F - strange issues with charging



Hello everybody,

- On monday i ran into a strange problem with my N910F. At first it was just not charging whatsoever.
- after the phone ran out of power, i attempted to charge it which gave me a brick with a black screen, vibrating short every two seconds
- Fine by me i thought, went and got a replacement battery (after checking simple stuff like the physical state of the battery (normal) and killing the batterystats (which i heard both yay and nay about so i decided to give it a try).
- Replacement battery charged overnight on the USB Port of my computer (2.0, for the completionists) went smooth (didn't turn it on, just had this bubble animation of charging).
- Turned it on this morning (booting apparently took 3% off my battery) and all well so far.
- finally in my chair at work i plugged it into my power cable (genuine Samsung FastCharging adapter that came with the phone itself) and nothing happened
- tried another adapter (some cheapo 1A adapter) which started charging around 10secs after connecting but decided to stop charging after a couple of minutes
- some shaking and gentle knocking brought back the charging symbol for some seconds, seemed like some loose contact or a broken cable so i felt fancy and plugged the very same cable (the one originally shipped with the phone) to my laptop. started charging instantly and no shaking or knocking stopped this (so no loose contact or broken cable at all)

This is the story until now, put together as complete and organized as possible. For now i'm stuck to charge my phone on the laptop or computer which seems to work. In this progress above i tested around 7 chargers, 3 laptops, 2 computers, 10 cables and 3 screens with both batteries, although the workaround i have now is only tested with the genuine cable as i was just done with testing for the night.

Now for my questions (apart from a touch with the magical fix-everything tool):
- What i see as possible causes based on my very shallow knowledge are either the microUSB port on the phone or the power distribution unit. Anyone has an idea what to check?
- As i have no idea how deep the OS goes, could it be a software issue by any chance?

Even though the device is only ~9 months old, I don't like the idea of going through Samsung for this one as i tripped KNOX already.

Hope there's still hope for me :)

Cheers,
Fachtal



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