Sears Craftman Garage Door Opener Problem

mmiddekeOctober 24, 2008

I have a sears Craftsman 1/2HP Garage Door Opener that is 13 yrs. old. It had been working fine. Now when I push the button to close the door (from any of the remote transmitters or wall unit) it starts, but stops immediately (similar to when the sensors are not properly aligned).

I checked the sensors and they appear to work fine. I even by-passed the sensors by disconnecting them from terminal 2 & 3 and putting in a jumper wire. No change.

I adjusted the downward force becasue I thought the garage door may be binding. No change.

I disconnected the garage door from the trolley just in case it was binding. No change.

So, I think i have iosolated the unit itself as the problem, but don't know where to go from here. If you hold the transmit button down on the wall unit the door will go all the way down. It also opens fine when you push the remote or wall unit button.

Any suggestions?


Thank you for reporting this comment. Undo

Number one you have a sensor problem. Number two you cannot bypass the sensors.

    Bookmark   October 24, 2008 at 6:39PM
Thank you for reporting this comment. Undo

I am having the same problem right now with my garage door opener. I hit the remote on the wall and it goes down and comes back up immediately. Don 1 2006 says it's a sensor problem. Don't know what I should do? What can I do to fix the sensor problem?

    Bookmark   December 26, 2008 at 5:26PM
Thank you for reporting this comment. Undo

Cold weather affects the receive unit of older Craftsman garage door sensors. You've tried tweaking the alignment. You've checked the connections. Everthing is as it was when it worked but now the weather is cold and the garage door won't close. The green light on the receiver is off. You've tried warming the sensor with a hair drier and it miraculously woke up after a few minutes of gentle heat. Well, are you ready to fix this thing or replace it? Let's fix it. Remove the clip on wire and unscrew the sensor from the bracket so you can hold it in your hand. Notice the seam that runs lengthwise along the unit. Using a sturdy blade such as a carpet cutting knife, score the seam several times being careful not to apply too much pressure or cut yourself. Carefully pry the shell into two parts. Be careful not to lose the lens when separating the pieces. Gently lift out the printed circuit board. On this board are two electrolytic capacitors. One is 470uf at 10 volts. The other is 1uf at 50 volts. (Probably only the 470uf part is bad but I replaced both capacitors because I don't like doing the same job twice). Go to Radio Shack or your favorite parts supplier and buy replacements. Solder them in observing the correct polarity. The board has a plus sign near the hole through which the positive side of the capacitor goes through. If you are unsure how to solder the parts in, find the nearest geek on the block and pay him a few bucks to do it for you. Put the two halves back together and use black electrical tape or whatever you've got (no duct tape pleeez!) to hold it together. Plug in the cord and mount it back on the bracket and tilt up and down until the light comes on.
You are in business again for about 5 bucks worth of parts and a little of your time. Alternatively, you can buy a new set of sensors for about 30 bucks.

RE: Craftsman Garage door opener
One last post: I took the old capacitors to work with me and put them on a cap checker. My suspicion was correct. The 1uf capacitor was still good and the 470uf capacitor was bad. So you don't need to replace both unless you really want to. Just replace the 470uf capacitor and your repair cost has now dropped to about 2 bucks worth of a part and your time.
PS: When you tape the two halves together, run the tape lengthwise along the seam, one piece on the top and and another on the bottom. The mounting screw will keep the halves together. You just want to keep the dust out.

    Bookmark   January 9, 2009 at 9:34PM
Thank you for reporting this comment. Undo

My 1/2 HP opener, the lights have stopped working on it. It is the model with one light on each side of the opener. Model 41A-5483-2B, where can I order a board for it.

    Bookmark   February 9, 2011 at 2:50PM
Thank you for reporting this comment. Undo

Don't order a board. Unplug the opener and remove the bulbs. Use a small screwdriver and pry out on the center contact in the light socket. Replace the bulbs and plug the opener in.

    Bookmark   February 9, 2011 at 3:49PM
Thank you for reporting this comment. Undo


    Bookmark   April 5, 2011 at 6:34PM
Thank you for reporting this comment. Undo

Replace all the parts for your model. Shortcuts will only have you doing the job all over.

    Bookmark   April 6, 2011 at 9:47AM
Sign Up to comment
More Discussions
who makes a 10x8 "Carriage House" style garage door?
Perusing the websites of most of the major garage door...
Snowblower help
I have a M t d model 317e760f118 track driven snow...
Garage Door Torsion Spring
Have you noticed that local HomeDepot/Lowes do not...
Custom Wood Garage Doors
Does anyone know or have experience with wood garage...
Shop vacuum
Are there any good 12 -15 amp shop vacs that have 1200-1500...
Sponsored Products
Oil-rubbed Bronze Mushroom Dummy Doorknob
24'' Butterfly Berry Wreath
$39.99 | zulily
23 Inch Bathroom Vanity Set
Entryways Lavender Welcome Handwoven Coconut Fiber Indoor/Outdoor Doormat Multic
$39.99 | Hayneedle
Meditub 30x53 Left Drain White Whirlpool Jetted Walk-In Bathtub
Beyond Stores
Pro-Series Tonneau Truck Bed Cover - Ford F150
Beyond Stores
28 Inch Wenge Bathroom Vanity Set
Afina Signature Collection Double Door 27W x 21H in. Recessed Medicine Cabinet M
$658.00 | Hayneedle
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™