Is it the light switch or is it the light socket?

first test is to operate the switches for both items and see if they have the same amount of snap to them. a bad switch feels kind of mushy.

test two would be to turn off circuit breaker, remove wires from the suspect switch, twist them together. turn power back on and see if the light lights. If it does then its the switch.

Turn the power off, remove the switches and inspect them. Put a jumper between the two switches so the light and the fan are now tied together. turn the power back on and the turn the fan switch on. If it is a bad light switch you should now have both lights and fan on. Turn the power off and replace the bad component. If this does not solve the problem, call a qualified professional electrician.

The internal wiring-workings, of the original unit, may of failed. The switch panel may of failed also. Compare the physical switch actions to one another( in a dual switch design) to see if one is weak and loose in it's action as compared to the other. If so then the switch has probably failed. I've seen many light switches fail in homes of the 70's and 80's.

Take the 2 wires that go to the switch and jumper them.

If the light goes on, the switch is bad.

Also, check the connection in the fixture.

you probably did each and every thing suitable, that's what's called a swap leg. because's known to apply 2 twine (w/floor) romex on all residential shape. that's interior of code to apply one area from the junction field to the swap field. how that's linked: you have a continuing warm feed on the white and your swap leg (which purely has capability whilst the swap is on) is the black, that's the well-liked thank you to connect it. Then that's despatched from the junction field to the easy on the black twine (swap leg) and a white twine is linked to different impartial wires. ( i often mark the white it extremely is the consistent capability to the swap with black tape to show that that's meant to be a warm leg).

Double Ditto on the bulb. Switches rarely go bad.

If you checked the bulb, your best bet is to test the power to the switch and then to fixture when it is on. Have an electrician do it.

Did you try changing the bulb?

Try the circuit breaker first.

Test everything with a multimeter. You will then know what is the problem.

Try another bulb........