Yesterday, when I turned on the A/C I had no fan. Upon further investigation, the fuse was blown. I replaced the fuse and tried again. Everything worked fine until I tried turning on the A/C today. I heard the A/C kick in, but when I turned the fan speed switch, I heard the fuse pop. I plan on checking the switch first, however I was wondering what other things I should investigate? Do the switches usually go bad?