I found that Butler's was an authorized repair shop for my brand of coffee grinder. The switch was broken.
They repaired it within a few days for a fair price. They did say that in the summer when they are busier, it may have taken a bit longer. A friend told me they also had a good experience with a dehumidifier.
Glad to have this place in my neighbourhood.
NB They opened on Gerrard in the '20s and have been in their current location since the 40's. It's a cool, old-school shop.