Dead flower. Unplugged connector is all.
In the learning lab.
Tilted to get at the power wires.
One power connector soldered together.
Old overheated spade lug connecotrs. Look at how blue they are!
This is why the power connectors were getting so hot.
At 12 Amps, even a 0.01 Ohm connection throws out 1.2 Watts of heat.