So my dad gave me his Sankyo X-files pachinko machine which he had in storage for a few years. I didn't know, and he didn't remember, that it required a transformer to run... So I plugged the black power-cord coming from the machine straight into the wall. When I flipped the power switch, I saw a bright white flash coming from directly behind the power switch, and then nothing. I tried again but saw no signs of life/lights.

I've looked all over the unit but I can't find anything that resembles fuses. I really hope that I did not destroy the unit as it is a beautiful piece of machinery. Here are some photos of the machine, I am hoping you can guide me in the right direction to troubleshooting my terrible mistake.

I've uploaded the photos here:
https://imgur.com/a/QxFFwjw

The photos show the cord I plugged into the wall, as well as the power switch I flipped, which I saw the bright flash directly behind (to the right in the picture) of the switch.