Recently bought a home and I have never dealt with electrical issues before. We have one switch that lights up 5 different bulbs. Suddenly, this evening onwards, when I switch on, only one of the bulbs comes on. Seems very unlikely that 4 have gone bad at the same time. I tried googling but couldn't n find anything that addresses this issue where the switch seems to be working since one bulb does come on. Any guidance you can provide would be great. Thanks!