The 045AV used a points ignition. AVE's were electronic. While possible, it's unlikely that someone converted an AVE to an AV. That said, I would very carefully examine the points setup on your saw and clean the points for starters. Also inspect the wiring for chafing, worn insulation, pinching, etc. I think I'd put my money on the condenser going bad, myself.
Converting to the electronic ignition just for the sake of doing so and/or implementing the fix detailed in this thread would be expensive and probably unnecessary to get the saw running right again. A points saw will generally provide spark you could weld with when properly maintained. Without searching, I would imagine the points and condenser are still readily available if you dig around a little for the parts. I rebuilt one a year or so ago and was still able to get a case gasket and seals through a dealer.
And if you can't get the points setup to work properly, an Atom or Nova module (chip) would probably be the easier, cheaper, and faster way to eliminate the points ignition.
