A reader writes:
My question is, I have a few strings for the C-9 and the slightly smaller ones, but over the years the sockets have collected a whitish substance on them. Since some of the new bulbs won't light in these sockets, I'm thinking this white build up is why. Is there a way to clean off that stuff so the bulbs can make contact inside the socket? Otherwise, I bought all those new bulbs for nothing. Thank you.
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You're probably right about the whitish stuff in the sockets of your light sets, but I'm copying my friend Fred Fox, who runs the Noellkat vintage Christmas decoration site on Etsy, and has a lot more experience with these things than I. For one thing, Fred probably knows something to remove that corrosion without making the problem worse, like I probably would.