Fan stopped LP120 Infocus machine fan stopped...machine shuts down

Its internal circuitry might be telling it to not run--a remnant request during the last cool down. Hopefully it is the fan itself. Try the master reset command. If you do not get an image before its shuts off, look in your owner's manual, count the way you manipulate the menu buttons to get to the reset, and try it between the moment you first turn it on, and it shuts off. Unfortunately some units will not let you input commands untill it is 'up to speed'. My Eiki is like this--nothing untill it is fully bright. Depending on your 'exploration' desire, short of going to a repair place, or buying a new one, you might try seeing if your unit is dirty, see if you have power to the fan (voltage meter--maybe 5-7 volts), or something is jammed in there. Depending on its age, the fan just might be dead, Jon.