I hope I am asking this question on the right page, if not please I appologise for any inconvenience.
I just moved into a new home where extra garage door opener does NOT work (Only one works):
The garage door opener is:
-Craftsman 1/2 H.R Part: 41A4315.7D, Mod: 139.18054, S/N: 04505C00439
Here is what I did:
-changed the battery, looked at the back of the unit if I could find any frequency settings for another door opener but could not find.
-The previous owner says the other door opener needs to be set? I do not know what he is talking about.
I am posting this question if any of you had the same issue with the same make and model? and if in any case a universal remote opener is available which I can buy?