Excuse me for barging in on your gloom.
AFAIK Rey makes and sells some pretty good lights. And he takes good care of his customers.
You say the LED and driver on this one are okay. So the main parts themselves are in good order.
There are two options:
- have you contacted Rey, and what does he say?
- why don’t you try to (partially) rebuild the head.
We expect things to work flawlessly after unboxing.
But that only happens in 99% of all cases, because we live in a world that’s not perfect.