MacBook won't turn on

My 2019 MacBook Pro 13" w touch bar was working fine. Two nights ago I opened the lid and the computer was on, though I noticed the touch bar was blank and was unresponsive. The fan then revved up and a few seconds later the machine powered off. The backside/bottom was warm. Now it won't power on at all.

I've tried multiple chargers and cables, resetting the machine by holding down ctrl+command+shift+power button for 10 seconds, but there's no response at all.

Any idea what component failed? Battery? Logic board? I'm at a loss!