mattb32

Craftsman Garage Door opener won't close

mattb32
12 years ago

Hello,

Wife came home today and was able to open garage door without a problem, but when tried to close it, the unit hums for a couple of seconds and stops. No movement of the door.

I looked through the forum for awhile and saw some of the suggestions....the trolly was not up against the bolt, but I tried removing it and adjusting the Up travel away from the arrow without any success....still same hum and nothing else.

The Learn button diagnostic blinks 5 times.

Model 139.53914D

Any help would be greatly appreciated!

Thanks,

Matt

Comments (25)

  • ron6519
    12 years ago

    When you disengage the trolley from the track and try to close the door, what happens? How old is the door?
    Ron

  • mattb32
    Original Author
    12 years ago

    Hi Ron,

    New home and new opener - less than a year old.

    Door works fine manually - moves easily along the track. The manual suggests disengaging the trolley - closing the door - adjusting the up travel against the arrow and then hitting the button with the door closed....this should have caused the trolley to move away from the motor toward the door....but I still just get the same hum.

    A couple other things I've tried after reading this forum...

    I unplugged overnight and then plugged it back it and gave it a few minutes hoping it would reset.

    I also stood directly in between the sensors in the doorway and hit the button to activate and got the rapid clicks - so I don't think that is the issue.

    Other than when I intentionally block the sendors, I get the same 2 second hum followed by the lights coming on.

    Thanks,
    Matt

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  • ntcarson_gmail_com
    12 years ago

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  • doorguy06
    12 years ago

    Neil,

    Take a look at the trolley. It is that silver thing thats riding on the black rail. Your chain or belt attaches to it at both sides. Make sure it is not jammed up against a stop bolt either in the up position or the down postion. If you can't tell by looking at it, take the chain off the sprocket and hit the button if the motor still just hums for a second then it is bad if it starts working then the trolley is jammed and needs to be freed.

    If you motor will run and not open the door you have a stripped drive gear. So if you hit the button and you can hear the motor humming until you hit the button again then the drive gear inside is stripped needs to be replaced.

  • thectrlshift
    11 years ago

    This is an FYI for all with similar problems with this opener.

    I have a 1/2 HP Craftsman Belt Drive Garage Door Opener. Part # 41A5021-2B. Model 139.536645RT1.

    My opener was working, but the belt was not moving. similar to a problem stated above. I opened up the cover and it was quite clear that the drive gear was stripped. There were plastic shavings from the gear all over the inside of the unit. The gear was completely dead - it could not grip the screw-drive.

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    Turns out that it was not the right piece. It was an assembly for a chain drive unit - even though the salesperson said it was made for my unit. Also, there is a round cover that screws into the chassis. The replacement piece was completely round, where mine has an arc cut out of it. This is important as a completely round piece would not have fit on the chassis properly.

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    But once I replaced the gear, everything else was really pretty easy. The disassembly and re-assembly went quickly without incident. There are instructions that come in the kit.

    Everything is back up and operational.

  • dtac
    11 years ago

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  • tishtop
    11 years ago

    My garage door won't close. It's a Craftsman opener. The light on the motor comes on, so it's getting power. When I push either the remote or the wall switch, nothing happens. No sound at all. There's nothing in the way of the sensors. The wall switch, I believe, used to have a light under the button. There's none now, but I may be mistaken. Any ideas? The door opens easily by hand, so I think the springs are okay. It crashes down when I close it by hand, because it's a heavy door. The opener is about 10 years old. Help would be appreciated. Is there a fuse or a reset button? Where would they be located?

  • don_1_2006
    11 years ago

    I would unplug the unit, remove the logic board and look for broken or burnt traces on the PC board.

    If your door crashes down when you close it there is definitely a problem there that needs to be tended to. The springs on the door are there to compensate for the weight of the door. It should not be that heavy.

    If you are not comfortable with removing the logic board maybe it is time to call for help and have the door checked at the same time.

  • pguilb6433_cox_net
    9 years ago

    my sensors are over 10 years old and iI can't get them to light up. do i need new sensors or is there a way to clean and reset the sensors. Rhode Island just had a 20 inches of snow ant the sensors could have gotten wet.

  • macv
    9 years ago

    call the installer!

  • sdello
    9 years ago

    pguilb: Did they work fine and then just quit one day? Are both lights now off? Check the leads for any breaks or shorts. If the sender is off then the reciever will be off because it's not sensing anything.

    Replacement sensors are available from sears. The door should still work going up and should still go down by manually holding the wall button for the full closure.

    If nothing is working then the problem is not necessarily related to the sensors.

    Hope that helps.

  • carl_janak_hotmail_com
    9 years ago

    Model 139.53662srt will not go up or down. Bulbs on each side of unit will not come on. Pressing the remote or hard wired operator results in a couple of clicks which seem to be coming from the logic board. The little light next to the programming button on the unit blinks 5 times and stops, blinks 5 times and stops, blinks 5.... The logic board # is 41A5021-2B. Time to replace this board? If so, where can i get one?

  • BPCW
    8 years ago

    I've been having problems with my Craftsman door opener lately too. First, the door wouldn't close completely...it would go down a foot and then come right back up. So I adjusted the screws on the unit and that worked for a few weeks. It started doing it again a couple of days ago, so I adjusted the screws again (and I think I adjusted them way too much) and couldn't get the door to close. And now, the motor hums twice but the door does not move. Door works smoothly manually.

    Any help?

  • Craig012
    8 years ago

    Hoping for help as it looks like many know what they are talking about here... My door opener was acting up on my Craftsman Door. I thought it was the battery in the remote so I replaced it. Now it won't open at all. So, I thought I should re-sync it. Noticed that the instructions on the back of the unit are slightly different from the ones printed in the manual. I've also read how some are suggesting other ways to program the remotes. Therefore, can someone give me a foolproof step by step on how to reprogram the remote and get my door working again by remote. Door works just fine by the wall console.
    Here's the specifics:
    Unit is model 139.53677SRT1
    1/2 H.P. Installed in 1997
    Remote is the basic 3 button style

    I appreciate anyone helping me to get this going again. I've followed the instructions on back of unit and in the printed manual to no avail. Instructions say that the opener light should flash while holding in the buttons, but it never flashes - it just stays on a few seconds and then goes out.
    I must be missing a step or something...?

  • don_1_2006
    8 years ago

    Press and hold the button you want to operate the door on the remote while you press and immediately release the smart/learn button on the rear of the motor unit. Release the button on the remote. If this doesn't program the opener you have either a bad remote or a bad receiver in the opener. If you only have the one remote there is no way to tell which one is bad.

  • Craig012
    8 years ago

    I do have 2 remotes. Tried the method you suggested, but neither one seemed to work. The manual suggested holding down the remote button, the light button on wall control and then push the door control push button. It then says, "after the light flashes, release all buttons." I've tried doing all this at once (with the help of my daughter) and nothing seems to work. Is there another step I'm missing or ???

  • don_1_2006
    8 years ago

    You are not missing anything you have a bad logic board.

  • doneandgone
    8 years ago

    For everyone having the problem with your garage door not closing...
    I've read this entire blog and tried everything suggested. The force/travel adjustments would solve my problem for a while then it would come back so, if you've already checked sensors, wiring for damage/connection, adjusted the up/down force, adjusted the up/down travel here's something to try before buying a new opener:

    Inside the unit find the up/down travel adjustment mechanism(see photo). At the end opposite the screw-heads you turn to adjust the travel there is a gear mechanism. When these gears wear they can slip. In addition, the chassis for the gears is plastic and over time will weaken-my opener is almost 12 years old! My gears are still in pretty good shape. The problem is that the chassis would flex and allow the gears to jump hence, the reason my adjustments would work for a while then the problem would come back. Now I know this will sound like a hokey fix but I figure it is better than dropping a couple hundred bucks on a new opener...I pushed a toothpick into the hole in the main chassis where the travel mechanism is snapped in essentially eliminating the chassis from flexing and allowing the gears to slip. make sure you do this on the side opposite the gears. If you do it on the same side you will put a larger space between the gears making the problem worse. This has been working for nearly a month now. I attached a picture of the travel adjust mechanism for reference. It is difficult to see the toothpick in the photo. It is right next to the brown wire connection opposite end of the mechanism from the adjustment screw heads.

    One other hint: the opener will most likely get hot running the door up and down making your adjustments and will shut off (thermal overload protection). I don't know why but after this happened the green light next to the remote programming button on the back would flash 5 times-off-flash 5 times...repeatedly. I had to pull the power for a couple minutes to get the light to stop blinking. Either let the unit cool for about 10 minutes after it shuts off or to keep your unit from overheating, place a small floor fan in position to blow on the motor.

    Craftsman 1/2 HP model# 139.53971SRT manufacture date: 02/2000

  • cnjstewart
    8 years ago

    I am having the exact same problem as Craig012 mentioned back on Feb 14, 12. My remotes will not work or reprogram but the wall unit operates the door just fine. I have tried all combinations of reprogramming (walking through the manual, speaking to Chamberlain customer service, and even using a replacement universal remote). You mentioned that there must be a bad logic board. If that is the case is the there a way to confirm that it's the logic board and once you know for sure what do you do to fix it?

    Thanks.

  • TomL618
    7 years ago

    Mine would go up OK, as stated in the original post,
    but would not go down
    unless I held in the button on the wall
    (remotes did not work)

    MY problem turned out to be the chain "tensioner"
    (see picture); the chain was sagging

    Simply tightening those 2 nuts (turning both to the right)
    to pull the chain tighter - about 1/2"
    corrected the problem,
    in MY case anyway

    This post was edited by TomL618 on Mon, Aug 12, 13 at 14:58

  • loric65
    5 years ago

    TomL618 - it's been 2.5 years since you posted but thank goodness you did. You had exact same problem and it fixed mine. I'd have never been able to do it without your attached picture. THANK YOU!