Hey Dirk,
I have two boards on my bench, #1 and #2... #1 has the small aluminum heat-sink and a burned out LED driver (failed from overheating). #2 has the thick copper heat-sink and would be fine except the installer ripped J4 off during installation.
The LEDs on #2 are fine and the traces failed from the mechanical stress of attaching/removing a quick connect to it (I don't think heat will affect the traces on the copper boards). I figured #2 would work if I could fudge the J4 connection, so that's what I did in the photos above.
I still plan to repair #1 and then take temperature readings on both, but I won't do that until I get a hot air rework station (coming soon) to do the LED driver removal/replacement.
Incidentally, I saw a board with a torn off J4 on eBay for 40 bucks... if my fix would fit in the housing, an enterprising person could have themselves a cheap replacement!