Good luck with the repair. I have a Nikko Alpha 440 that I'm feeling stuck with as well. Maybe set it off to the side for awhile and come back to it later feeling recharged. That's what I do sometimes.
440?! That's some power! Good philosophy, thank you. That's exactly what I did and it turns out that the bulb dimmed....I just didn't wait long enough. Felt pretty dumb after that one, but it's fixed!