This week I started having a problem with my garage door opener. When I close it, it hits the ground the same as it always did (a tad hard, honestly, but never was an issue until now) and then it goes back up. There is no debris or anything that would be in the way to cause it to be off, not even by 1/16".
there appear to be four control points for this opener....two for momentum and two for travel. I cannot find any such adjustments. It's possible I have the lowest end one and these aren't available on it, but surely it has SOME kind of adjuster on it...? If there is, where is it? All that is on top appears to be the wiring to the motor. There is a small black box (sealed) on the rear of it, which has the wiring to both the wall-mounted open/close switch, and the ariel for the remote. As it is sealed, it looks like the box would need to be broken to get into it, so it seems unlikely that they would be there. The lights in the front come out easy enough, but there are no switches, knobs, or adjustments in there.
Any infomation would be appreciated.