My remote intermittenly opens/closes the garage door

the remote can use only 1 button to open and close if programmed right
open the lid of the seers control box and press the program button then use a different button on the remote to open and close
It would appear that the seers unit is also made by chamberlain

How old are the batteries in the remotes and keypad? Replace the batteries. If that helps, then you have solved the problem.

If it doesn't help, then check the antenna wire of the opener. (Make sure it is extended down from the unit.) Note this doesn't apply to all garage door openers. (We have several models - some with the external antenna and some without.)

Does your garage have metal walls and metal doors? This can shorten the range between the receiver and the remotes or keypad. An antenna extension may be available.

I don't see the HBW077 as a model number at Sears Parts Direct or Manage My Life. Please check the model and let me know if I can provide any additional assistance. (Sears Parts Direct has parts for my garage door openers. Manage My Life has manuals for Craftsman and Sears appliances.)

I hope this helps.

Cindy Wells

On the remotes put switch #1 in either position and match up switches 2 through 10 to the dipswitches on the motor unit. There is a good possibility your receiver has quit working.

Sounds like you have a receiver problem. 2 new remotes doing the same as your old remotes.

Give Chamberlain Technical Support Hotline a call at 800-528-5880. They will help you.

If your opener is truly 25 years old there are not going to be any parts available. The model number you give is not the model number. It starts with 139. and probably has 6 numbers after the period or dash. Once you have it you can go to Sears parts and see if there are parts available.

Door sensors are not working. Check if lights are on both sides.
Might be misaligned or one is bad.
Door will close if you hold in the garge close button until it's all the way down.
And it will open on it's own.
You can get these off ebay.

I would remove the cover and take a good look at the limit switch assembly. If you watch it you will understand how it is supposed to work. There could be a bad connection on the logic board. You can remove it and check it over.

Try this link, should help.
http://www.garagedooropeners.us/technical_information.html

If you hold the wall button down and the door closes the problem is photo eyes.