How do I fix my lawnmower?

My flymo was left out in the rain and got very wet. I dried it out pretty thoroughly with a hair dryer all around the power connections and in the vicinity of the motor windings, the switch also. I left it indoors for a couple of days, I then decided to try it out. However it's completely dead -where should I start checking it. I am pretty knowledgeable on simple electrical repairs and hope to be able to fix it myself. Thank you in anticipation.
Regards
Ray