Phone will not charge when on, blinking LED when off and plugged in
Yep, I'm having another round of issues on my One.
Just some information:
Running stock ROM, bootloader locked (not "relocked"), S/N HT346(...), Quick boot OFF, previously sent in for repair.
I believe this has been brought up before, but here I go:
I pulled the phone off the charger this morning with a full charge. However, Car mode unexpectedly opened up. I found this odd, since I'm running a stock AT&T ROM using the Sense launcher, which means Car mode is nowhere to be found. The device also reported using an "incorrect charger" or some other thing. I use the charger that came in the box with my phone. I assumed it was a mistake.
However, in my infinite wisdom, I decided to brush it off and went on with my day.
Usage patterns normal, maybe with a bit more GPS and camera use than usual, but more or less a normal day.
Come back home, plug it in. Phone will not charge. I do not believe it's a hardware issue. Why?
Plugged into another outlet, will not charge.
Switched wall warts. Will not charge (I have a few from older HTC phones and a few from other Android devices).
Switched USB cables. Will not charge (tried combo-ing with wall warts, same result).
Plugged into PC. Will not charge AND does not recognize USB connection (both ends). Tried with several different cables, no dice.
Rebooted, no dice. Did it again (and several times after that), no cigar.
Safe mode: Nope.
Connect via fastboot works (so "FASTBOOT USB" works)
It WILL charge when powered off.
Now, as the title states, I noticed the LED blinking when the phone is powered off and plugged in via AC or USB.
The orange LED will light up for ~6 seconds, dim down (to the level of brightness that would be considered "normal" for the phone) for ~6 seconds, then turn off. The process repeats after the LED turns off for about 5 seconds.
Any ideas on why this could have happened and what I can do to solve this problem? I'm going to send it in to HTC if nothing gets it working again (and has it stay that way).
I posted this to the AT&T One forums, but I thought posting this here might help some more. If this goes against the rules in any way, please remove this post.