LED light bulb not fitting in Singer Slant-O-Matic 503a/500a (“Rocketeer”)
I recently decided to update all the lightbulbs in my machines from the old incandescent ones to LED, because I don’t like how hot and dim the old ones are.
No issues with any machine so far except for my Singer 503a. The manual says it uses a push and twist bulb, and I bought a new Singer-branded LED one. The old bulb that came out of it was also a push and twist one, so it doesn’t seem like the socket was retrofitted or anything like that. However, the new bulb doesn’t seem to want to twist and lock into the socket. I don’t want to push too hard and risk breaking something, but it just doesn’t want to turn, even with a little force to push it in.
Is there some other type of twist bulb I should be using instead? Anyone else have issues with this bulb fitting? Trying to figure out if I got a defective bulb or something, since it technically should fit…