I am using barrel jack power supply for my jetson nano. When I switch off all the power supply and switch everything on again, the jetson nano cannot be started (basically, no power can reach the jetson nano as the fan is not working either). Until I unplug the barrel jack power connector and plug it in again, the jetson nano and the fan switch on again. I would like to switch on the jetson nano by switching on the main power supply and I do not want to plug and unplug the barrel jack power connector every time. How can I solve it without connecting J40?