@col_clucks said in Duet 3 mini 5+ unresponsive after axis crashed:
The status LED flashes slowly in all modes.
See https://duet3d.dozuki.com/Wiki/Duet_3_Mini_5plus_Wiring#Section_LED_indications
By slowly do you mean "Flashing steadily, about half a second off and half a second on" (normal operation), or "Fading from bright to dim and then back again" (USB bootloader activated)?
Ian