I have an Altman 65Q that I can't get to work. I've swapped out three lamps..BTL 500/Osram..and none of them work. A visual inspection of the lamps found no evidence of burn-out.
I disassembled the fixture and connector to see if there was a bad connection. There wasn't.
I visusally inspected the socket and didn't see any discoloration.
The fixture failed after about a five minute on period.
What am I missing?