I recently picked up a Shinp laser on eBay, it worked fine but today the galvos are not moving, the lasers are lit. I've had a peek inside and on the galvo amp board one of the three LED's isn't lit, I can't see anything obvious and the laser worked fine when I switched if off last, I haven't moved it or knocked it since.
Any ideas as to why the galvos would not be working?