I think I blew everything up...

I have a 16V automotive power supply feeding an Amp2, a 3B+, and the official 7" touch screen. I did a test power up and it worked fine. I hooked up the left speaker and did another test power up and nothing worked and SOMETHING got really hot. The Pi appears to be dead, and I don't know about the Amp2 and the screen.

Hope can I test the power regulation circuit on the Amp2 before I hook another Pi to it?

Could the 16V be the problem? Any ideas at all?


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