I can't post in developer sections but wanted to reply about a post some one put about their phone shutting down. I also had the same problem. I thought it was my phone but see now it may not have been. I think part of mine may have been a poor quality usb/data cable. Once mine did power on (after 3 days on mobile charger) I retried my usb cable I caught it discharging rapidly.
What firmware and radios are you using?
Just curious if there is any relation...
I have had zero issues like this, but have seen similar cases on other devices when running newer roms/kernels, on older firmware /radios.
Just a thought and maybe something worth looking at.