New here! I've been making b&w prints for four years now but I have never had my own darkroom. I was gifted a Beseler dual dichro 23c ii enlarger and I've got a couple of questions and would love some advice. About 40 minutes into printing (meaning the enlarger has been on) there is a small pop, I think from the power supply, and the bulb shuts off. The bulb won't turn back on for 20 minutes or so. I'm thinking maybe the fan isn't working properly? Any suggestions? And if it is helpful I am using the bulb the manual says to use a EJL 24V200W. I was also curious - where do people start with their magenta/cyan/yellow settings for black and white printing? Thanks!