Rear Window Defroster

I have a 1992 Ford Bronco XLT and I was wondering if I cud get sum input on why my rear defroster. It wont work even though all the fuses are not blown. I even switched the fuses with brand new ones.

sure it's pluged in????

sure it's pluged in?

yea it worked when i bought the car and then just one day it didnt work.

Do a visual inspection on the rear window!
You can buy a repair kit @ any local parts store.

I hit my knee on the rear defroster button when the back window was down during the summer. Is there anything I can do to make it work?

A fuse is designed to protect the circuit, did your knee damaged the switch?

I dont believe so. If i push it in you can here it click like if you turn it on, but the light doesnt come on.

Did you check the voltage yet?
Is the light built into the switch?
If the light indicator is burnt out, it might act like a blown fuse.