I presume the lamp in ours failed last night (typically just as we'd spotted a hedgehog).
Of course went to replace it, and the cover is screwed on (not bolted).
Of course years of weathering meant "in your dreams".
So I'll replace the whole thing.
Again.
Although to be fair SWMBO did recall it was fitted in 2007, so "mustn't grumble".
Devils own job getting a grown-up replacement. An awful lot of this LED s**te.
So the twin spare pack of lamps I bought in 2003 remains unopened.