Humidor rehabilitation

I have a 75 count humi that lately has not been holding its humidity. When I close the lid I don't get the familiar tension on the lid. Is there anyway to fix this or do I **** can the humi? The cigars in it seem to be dry. I have checked the hygrometer and it is correct. (salt test). It is a digital hygrometer.
It use to be my favorite humi.