This morning the light bulb in my ceiling fan blew out with a rather loud "pop" sound. I replaced the bulb and nothing. I replaced the lampholder, bypassing the pull chain switch and nothing. The fan is working, so I have power. There is a small plastic box in the wiring to the lampholder with a trademark name of Vim and some electrical spec information printed on it. I don't know what that is. Is that where the problem lies?