EUMIG MARK S 804D 2 Track SOUND PROJECTOR Works But Can't Get Bulb To Turn On 😕

Unit is in good physical shape. The microphone and recording cable are still sealed and new. Functions all seem to work as they should. I can't get the lamp to work and I've tried two new ones. Not sure if it's a fuse or what but I stopped diagnosing after changing the bulb as that's the limit of my expertise with these.

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