Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

1 Answer

Photo eyes inop, opener still operates

I have a Sears HBW0777 opener that still works despite blocking the photo eye sensors. The lights stay green even when blocked. Tried to realign, no change. One of the lights just dims a little when blocked. It's an oldie but a goodie. I installed it about 14yrs. ago. I wouldn't worry so much about this but I have young children. Thanks for any input!

Posted by on

  • Anonymous Jan 15, 2009

    I installed it back in '95. The eyes were part of a kit from Sears. The housing is black. I will go look at it to get more info off it tomorrow - too cold tonight - minus 16 and dropping.

  • marty metzger May 11, 2010

    do not know this unit number. how old is it. what color is motor housing. may have add on eyes. standard eyes became law in 1993. If add on, they are not smart and that is one reason they stopped offering them. might consider a new unit for yur kids sake if eyes are add ons.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert who has answered 200 questions.


    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 244 Answers

If eyes came with opener, that is good. clean off lens. are both eyes leds lit. try aligning again. New eyes avail for $30 if you want to try.

Posted on Jan 15, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Dusk to Dawn Light Adapter

Might work. Might not. Depending if the eye can sense light and dark from that position. If area is shaded, then the sensor might think it's dark earlier in evening. If the area is dark, then sensor will not do as well, or might stay ON full time.
If the outdoor light shines on nearby surface, the reflected light might cause photo eye to blink on-off throughout night.. or not function as expected.
You can add separate photo eye to any light, and choose location for photo eye.
Add a comment and say what you discover, or for followup wiring question.

Jun 10, 2013 | Home

2 Answers

Photo eyes for genie garage door

Your sensors are defective and need to be replaced.

Feb 15, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have two Sears 1/2 hp garage door openers. Cold weather problem

Very strange they both have the same exact problem. I would suspect something with the brackets is changing. When you are having this problem and the light on the receiver unit is not lit, tweak them a bit and see if it comes on. The odds of the logic board in both openers having the same thermal problem is just too high.

Dec 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My liftmaster formula one has one sensor light green and the other yellow. no amount of realignment helps this. the garage door will bounce back up when it hits the bottom and won't stay shut. have tried...

One photo eye should be yellow and the other one green. The problem seems to be your down limit to be set too far. When you stand facing the door behind the operator the limit adjustments should be on the left hand side under the light cover. The down limit is the one closest to the door.

Sep 26, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door indicator light blinks 5 times

this probably means you have a bad photo eye if you happen to have to doors side by side may be picking up on other sides photo eye just switch sides from left to right, however if the lights are coming on but does not mean that photo eye is not bad it has a small circuit board inside of it...

Apr 03, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door Opener Lights

Some craftman operator don't have that feature. Are both photo eye lights green? Feature not available. If the photo eyes are yellow and green feature should be avilable. The operator needs to have a three button wall station. With the light on the operator off press and hold the "light" button for about a minute until the light flashes.

Jan 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sensor light

I assume you have a Craftsman or Liftmaster operator and you are talking about the photo eyes (sensors). If this is true thanone light will remain on if there is power to it and the other will go out when the photo eye beam is blocked or are not lined up.

Thank you for your your question bry4man. I look forward to answering any more of your questions.

Jan 03, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Have to hold button down to close door in cold weather

You have a photo eye (sensor) issue as you suspected. Be sure both green lights are on.  If one is flashing or is off, the photo eyes need to be realigned or there may be a wire shorting out (check for staples in the wire) to the photo eyes.  Sunlight can also be an issue.  The photo eyes might have to be moved away from the opening to be out of the sunlight.

Dec 31, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door won't go down using control

Make sure to clean off the lens so there's nothing blocking signal and make sure that theres no obstructions in the way of the photo cells before and during cycle. make sure that you have power going to them by having the Amber or red light displayed at all times and make sure that the green light is present for alignment. If it works for a couple of cycles and then goes back to being non active, make sure that the tracks or the surface that sensors are mounted to are not moving as door is in operation therefore they will move out of alignment during or after a cycle and will not allowed to operate! Make sure that none of the wires going to the cells are punctured through by any Staples! sometimes it could happen and when you move the cell around it could relocate from the staple and go back to norm, then after cycle it could short out from vibration which will send wire back to hitting stable! If none of these are helpful and you want a quick fix go down to your local home improvement store and buy a set of photo cell/safety cells and wire them up as diagram displays which is very simple and easy.

Mar 17, 2017 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

One sensor light is blinking green, the other sensor light is bli

the safety eyes are wired wrong on the back of the opener. Check the wire locations.

Nov 24, 2008 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo

501 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Glenn Mayer
Glenn Mayer

Level 2 Expert

91 Answers


Level 3 Expert

4341 Answers

Cindy Wells

Level 3 Expert

5225 Answers

Are you a Sears Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides