I have an internal "fire door" to gain access to my garage. This door has hinges that will automatically close the door. Unfortunately the spring hinges have ceased to close the door completely (with the same force as before), i.e. I have to now push the door to close it securely.
I'm asking how do these spring hinges work? - are the broken (and need to be replaced) or do I need to adjust the springs (if so how?)
Thanks