Scratch all that. I found a kill switch preventing the thing from running with the front panel off. Pressing the switch, it works with the new lamp and the front fan runs (after shutting off shortly after power on). With the old lamp, the disk spins for maybe a minute, the front fan turns on and off twice, and the disk spins down.

It's that burning smell that caused this whole investigation. Maybe that's normal for a new lamp; a break in period. I just don't want it to overheat and break another $300 lamp.

Thanks for your input.