Craftman garage door opener problem
I am having problems since my son tried to open the door using the keypad. I don't know what he did, but now the remotes and key pad don't work. I unpluged the unit, cleared the memory, reset the keypad, reset the memory on both remotes, replaced the batteries on both remotes and still nothing. When I punch in the code on the key pad the buttons start to flash. I am not sure why, but I do not know what he pushed to cause this and how to clear it. Any help?