I have replaced the battery in the remote and tried to reprogram it and it still does not work. To double check the programming steps, I used a second remote and it worked "ok". I notice that with the second remote when I press the button a light on the back panel of the garage door opener would flash and it does not with the first remote. Even with a new battery in the first remote. I do not know if something else is wrong with the remote. It looks "ok" internally. Any suggestions?