92 Regal Problem with the radio volume

Has anyone had a problem with the volume control on the radio? I can't seem to adjust the volume either up or down, when i turn the knob the volume remains the same.

Mine is like that too. It breaks easily. It used to work, and then one day, I was turning it up as usual, and it felt like some thin, weak platic piece broke off and the volume knob was loose and stopped working entirely.