Greetings and WELCOME to the site! I just moved your question that you had posted in Introductions to this forum topic area so that it will get the most exposure to those who are best able to answer it. Introductions is for people to introduce themselves and we try to not ask questions there.
I do note that you've already received one, helpful answer above.
It can be a little confusing when first learning how to use this site! Your question will get noticed much more in this forum topic area.
We would appreciate it if you would return to Introductions sometime to tell us a little about yourself though, if you would be willing to do that.
If your talking about the overhead lamp, then it's a fault such as described by the other responses....an obstruction, a loose connection, or mis-aligned sensors. If you have your instructions you can re-align them. If not, most manufacturers post information online. Get the mfg. Info and look around.
They actually align pretty easy, point at each other and you are usually there, The indicator definitely helps for alignment as mentioned above.
Visually follow the sensor wires where you can see. They can get abused or cut.
:confused: My 15 y/o Overhead Door (brand) garage door opener was working fine opening & closing until a few days ago. It has very low usage because I mostly park my car outside the garage door. Now when I press the remote control w/ new battery OR the hard wired wall switch, the light on the...
I mistakenly gave someone my garage door opener that didn't return it. I had a male friend come over and "change the code" including my car opener and gave me a universial which he also programmed.
I came to realize my code for my keyless pad outside doesn't work (since he changed the code....)....