It was working earlier today (about 3 hours ago), I know that 100% because I turned on/off airplane mode when going into/leaving the dentist this morning.
I drove around today for about 40 minutes or so, I'm fairly certain it was plugged into the car charger (that's what I do with my phone), but I might not have, unfortunately I wasn't paying attention. When I got back home, I went to turn it on and...nothing.
Plugging it into the wall with a known-good charger (works on other phones) gives no charging LED. Plugging it into the computer gives no plug-in noise in windows.
I've tried holding down all combinations of power, volume up, and volume down for 10s, 15s, 30s, 45s, 1m, 2m, 5m intervals. No response whatsoever.
I've also tried with different cables, different outlets, and even went so far as to bend the prong that the USB Micro connector interfaces with, no dice. I've tried USB3.0, USB2.0, and regular power outlets, to no avail. ADB reports no devices found (honestly I don't know what I expected). When someone calls me, it rings 2-3 times before going to voicemail on their end, but the phone sits impassive in my hand.
Is it dead? Is there something I'm missing? I'm really hoping I can salvage it, I love this phone. Unfortunately, I got it from Swappa so I have no warranty or anything, and honestly I really can't be without a phone since I'm waiting on a call back about an interview for a job. Can anyone give me any suggestions/links/things to try? I'm at the point where I'm about to attempt disassembly on my own, but I'd MUCH rather not have to go that route, since I'm more likely to break it than fix it.