Garage door won't open or close when the opener light is on
It sounds like a bad circuit in the opener. I have installed and repaired many openers and don't know of anything that would lengthen the time the light is on,  but check the safety sensors as if they are loose or something is part way in their line of site,  it will let the door go up,  but not down.I have found the wires on a sensor loose and it acted like this one does intermittently. Most garage door openers have a feature where you can over ride the safety switch by holding down the wall button.  Also make sure the remote lockout button on the wall unit isn't lit,  because it will stop the remotes from operating the door. I have not had any problems using LED bulbs in openers.