About 5 years ago, I made it part of my SOP to replace ballasts in all my restorations BEFORE they go into my game room.
I had recently restored a Galaga and had the whole game room powered up one evening. Before long, there was this horrid, acrid, overpowering "burnt oil" smell. How to figure out which game was emitting it? Well, the top of the Galaga was almost too hot to touch! The ballast had gone nuclear; lucky nothing started on fire. It took days to get that smell out of my house.
Since then, essentially every game that I work on gets a new ballast, starter, and bulb. I've always picked up the ballasts at Home Depot, but I shall have to check out the local Lowes to see if they have them on clearance.
Alan