Because the light bulb is physically screwed into an electrical socket. The socket (and fixture) are physically attached by fasteners to the beams in the ceiling. This is a mechanical solution of space requirements.
you fix the light on the ceiling fan by puting a new light bulb in your fan
What's wrong with it? No light, no electricity to the bulb socket, loose in ceiling...? Radioman
A light that is mounted on the ceiling.
Is it plugged in and on? If it is test the plug by plugging in a lamp to the socket to ensure the socket is working. If the socket light the lamp then the refrigerator has a fault.....(probably the compressor)
The bulb could be 'blown'. Remove the working bulb from the other light and try it in the socket of the one that isn't working.
No. I am assuming that you first replaced the bulb? If you did replace the bulb, then I would check to see if you are getting power to the bulb socket. If no power is getting to the socket, you then need to find the break in the electric lines going to the socket.
Well the light switch on the wall will make and break the electrical connection, making the light go on and off.
Either you have a short (in the wiring or socket), or you burned out the filament of your light bulb.
you may have your brake light socket and your back up light socket in the wrong holes. Or you have a short but that would probably leave you with a blown fuse and no lights.
Switch? Fuse? Socket?
Because when a light bulb is tightened the stuff inside squashes then snaps, causing it to blow.