Sorry to hear that
It's always sad when one of our beloved friends dies. I can't speak to your specific problem because I've never had a power issue, but I can say with confidence that it's almost never worth it to pay Canon's minimum service price.
I couldn't be happier with my Sony replacement with built in projector, but still have my canon sitting in a drawer as a backup in case I ever come across a zoom switch. Please let me know if you decide to upgrade to a newer model and want to sell your old one for parts.