I'm trying to see if I can identify if my door spring has broken or it my problem is related to the balancing cable.
I wasn't there when the problem happend but my wife reported a banging sound. Now when the door is lowered it does seem to go down faster than before but does not slam down. The most noticible issue is a binding during the last 10 degrees of door motion when it is opening.
Is there a way to tell which issue I have without opening it up?