Needed to repair an old mercury vapor lamp - it was dead to me...
It’s appears to be a quality fixture and it took me a while to figure out even how to open it. Turned out there was a tab to depress and it opened nicely.
But the insides were not so hot.
Or, really, it looked (and smelled) like it had gotten VERY hot.
So with the components fried, I decided to convert it to a 200W (equivalent) LED bulb.
But I had to rewire the whole thing, with the house (line) wiring going straight to the lamp socket.
Let there be light!