This may be a hard problem to describe but I'm going to give it a shot here. I have tried various searches but couldn't find any info. I am renting a very old house, it's very large and was converted into three seperate dwellings. I don't now how long ago this was all done but I am assuming it was at least 25 years ago.
Anyway, recenlty I have had a problem in the bathroom. Over the mirror there is a light fixture with two bulb sockets. A week or so ago one of the bulbs didn't light so I assumed that it had burnt. I had no extras on hand so I couldn't check. I then noticed that the other bulb has had a hard time lighting when I flip the switch. It does light most times, but will make a buzzing, popping or crackling noise. I then tried that bulb in the other socket and it did the same thing.
At first I thought maybe it was just a case of the socket wearing out or a loose bulb. Then just now, I went into my basement to get something and one of the two bulbs down there has starting o do the exact same thing. I know it's not a case of overloading, all of the bulbe here except one are low wattage compact flouresants. And I did try an incandecant bulb to see and it does the same.
What could be causing this?