It may be that the machine is consuming lamps fairly quickly.
The safety interlocking on my lathe runs on 24V, and so does the worklight The light on my lathe needed a new lamp every few weeks, and 24V 50W Q H lamps are like hens teeth around East Anglia. (Eventually, I managed to buy several lamps from the supplier of my lathe). After that, I stripped the worklight and filed two diametrically opposed (about 8mm) slots on the outer edge of the "reflector", to improve ventilation. Touch wood, no more lamps have failed, in the last nearly ten years or so.
it is possible that the light on the VMC is a similar unit, and may benefit from a similar modification.
You could probably source a replacement lamp from Warco or Chester, since my lathe is a look alike of the BH600 / Craftsman. (I would buy a few, to be on the safe side)
Howard
Edited By Howard Lewis on 03/05/2016 17:00:35