DevTerm CM4-Lite Not Booting

[MHam68HC11]

is the cm4 board plugged in properly ? another user reported the board can be inserted backwards.

see this forum:

Devterm does not power on at all

Just came in today, lucky me I thought to receive it (a month late) on Christmas Eve. Assembled gently and by the book, not my first rodeo, got it together with some fully juiced 18650s aaaaaand the power button flashes once and the system does absolutely nothing else. Continuing to hold the button does nothing. Connecting to USB-C power from multiple different sources does nothing. The fan does not spin a millimeter and there isn’t a single decibel of sound. Pretty furious, frankly. I’ve built…