Repairing a zapper

In the springtime, summer and fall, there is an appliance that works almost 24 hours a day, at least in my garage.
A zapper.
This one, a PestiTech, did work all the last summer and fall.
Really, in Arkansas is not an option to have a zapper to limit the "things" that can fly and bite you !
The garage is the main entry for these pests, so a good zapper is really the first protection.
Now it was time to restore it and ... of course dead !