I have 8 recessed lights (LED ~9-13W, 750 lumens) in my living room on a single switch that all went out at once. Breaker not tripped. Thought maybe they were in series or something. As I take individual bulbs from kitchen recessed lights to the living room they light up but are much fainter, as if they were dimmed all the way, but we have no dimmer.

As I take the "out" bulbs from the living room to the kitchen they fully light up to regular brightness, but if I bring them back to the living room, nothing.

Just bought the house in December but not sure what would cause such a thing. Any ideas? Is there a fuse or ballast type thing in recessed cans?