Besides occasional cleaning, is there any other periodic maintenance that's helpful in keeping these fixtures happy? Does anything need lubricating (such as the focus worm gears)?
Also, is there a 'typical cause' when a lamp won't strike (no buzz, snap, or noise of any kind), or is it pretty even among lamp ps, igniter, relay, lamp base, etc ? Any docs on troubleshooting steps besides simply swapping parts with a known good fixture?
Thanks!
