I moved into an old house. When I turn on the undercounter light a smell of gas occurs from the fluroscent light. It also is not fully lit up like the one beside it and it makes a buzzing noise. Is it safe or should I replace it?
A strong odor is usually the first indicator that the ballast is going bad. Always replace the bad ballast with exactly the same model. Anyone comfortable working with electrical writing can change a fluorescent ballast quickly and easily. You should also make yourself a note of the wattage, length and number of bulbs in your fixture in case the clerk at the hardware store needs the information to choose the right replacement ballast. Or you can take your notes and the ballast you just removed to the hardware store that way there won’t be any discrepancies on the right replacement ballast. Been there done that.