If you are concerned about faulty wiring, I would just switch out the entire magnetic ballast parts and replace it with an electronic one. Hellolights right now have 10% off July 4th special with coupon code of
"july42008" The sale ends today BTW and NO I'M NOT AFFLIATED WITH THAT COMPANY
The electronic ballast is at $90 bucks and at 10% off, is about $81.
http://www.hellolights.com/index.asp...ROD&ProdID=457
and wiring for these guys are easy as pie.
Compare that to the magnetic Coralvue ballast at $109 and you still have to get the ignitor if thats the part that is busted or causing problems.
http://www.hellolights.com/index.asp...OD&ProdID=1657
Personally i'm quite surprised coralife are still using magnetic ballasts when all the electronic ballast could fit into the fixture without external ballasts. They could also wire up the electronic ballasts external if it would increase the heat within the fixture too much.