I’m a high school student with a show less than a week out, and one of my spots stopped working. We replaced the bulb and checked the outlet it was plugged into to make sure it worked, but no luck. It won’t turn on. Does anyone know what I can do to fix it?
Presuming your AC power is good (yes, you said you checked... check again with another 1000W fixture to verify) it points to failure of the cordset or powerswitch. The parts diagram does not show a cover or lamphouse interlock switch, but that would be another point of failure. The 1238 also has a transformer for the lamp, but it's the least likely point of failure. At this point "qualified service" should be sought.