Generic COBs on the other hand seem to be hit or miss. So far out of 3 100W COBs I have received, 2 were damaged to the point of uselessness. One of them was damaged in a way that would be hard to notice unless you were checking the output because it lit up but put out only half as much light as the other. One of the 20W COBs died within seconds when I ran it at 40W.[/QUOTE]
It's a Cree! and a bit off topic.. but can anyone help please out, was doing a google search and found myself back here
: )>
I have a CXA that was fine and now appears to be putting out half power. So I can look at it and see the individual diodes. Before troubleshooting (redoing the paste, jiggling wires) I was wondering what to suspect, dodgy driver? The driver, MW Lpc 1050, is cooler than the others.. I'm hoping its the driver : ( when iv'e had dodgy cob mounting before the cobs sting just wont light (iv'e only used drivers in series), larger drivers with possibly different built in protections..
edit: fixed! thanks
I dunno, I gave it a few jiggles and it seems solid, when I switched it back on all is sweet! back at full power. Not confident with these ideal holders.. also i have nothing to measure so small newton meters, it really is a very light hand on that screw!