Recently, I have been finishing my basement, including all the electrical wiring. After replacing a ceiling fixture in a bedroom the other day, I noticed that the light switch seems to make a small 'popping' noise when you flip the switch. If you flip it slowly enough, you get more pops, accompanied by a faint yet noticeable electrical smell coming from the box. No smoke at all, and you have to get your nose right by the box to smell it (the other side of the wall this switch is on isn't drywalled yet).
I did find this
previous AskMe that describes my exact issue, but I would like to expand on that a little, as this is a brand new switch that was one of a generic bulk 10-pack I bought on the cheap. Is it possible that I just got a bum switch? Is there anything besides a defective switch (or a poor job attaching the wires) that would cause this behavior? This is one of those types where you simply strip the wire and push it into the hole in the back, no screws involved, so I cant imagine it would be that hard to mess up. 15a circuit, simple one-way switch with a single hot and neutral lead (+ ground).
Just want to be sure that I don't have anything more sinister going on. I didn't add load to the existing circuit, which was new with the house in 2003; I simply split the 6 basement lights from all being on one switch to being on their own switch in the new rooms that were built. In the room in question I did also replace a standard ceramic ceiling fixture with a drop ceiling recessed light.
I did test other switches down there, and found one more that seems to pop a little if you flip it slowly, but other switches are fine. I'm going to buy new switches regardless, but would love to know if I should be looking at something else, or returning the noisy ones as defective.