Apparently 12 volts is the minimum for blue and UV, etc. 9v for red.
Goodness, what a bunch of stuff. No fewer than six SOT-223's and a DPAK... five BSP373 N-channel MOSFETS with a .16Ω Rds on (assuming Vgs actually = 10V) all running in parallel... with the damaged 33 ohm resistor connected to... what, the source leads?
Hmm, what a very strange way of doing it. Seems any significant current would cause such an I*R drop on that 33Ω resistor that the gate-source voltage would suffer as a result. And the one visible trace (from R42) showing how Q2-6 may be driven is snaking its way suspiciously back to that Atmel microcontroller, instead of to a proper gate driver.
Nick, just to satisfy my curiosity, could you flip the board over and see if R10 is really connected to the third leg of those transistors? And could you read the number on R45?