TIL that it’s possible to have the antenna wire connector “push” the system reset button hard enough to engage the button. Net result: The board does not boot. Skootching the wire out of the way of button returns everything to rightness.
The new (larger and taller) buttons on Dash 1.1 are super-swell and greatly appreciated, but just be careful you don’t have anything interfering with them, lest you find yourself swapping out power supplies and cables… 