How To Change An RPM Sensor On Your Garage Door Opener
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- Опубліковано 28 сер 2024
- This video is on how to change an rpm sensor on a Liftmaster chain drive. The same process and part can be used for many Craftsman and Chamberlain belt drives as well as the chain drives.
Hope the video was helpful and had clear instructions. The parts used in the video are linked below. Have a nice day! (:
Order the RPM sensor through amazon here: amzn.to/2Hum5mG
Keychain remote: amzn.to/2AOEg3K
We also have a ton of other garage door parts on our website:
www.garagedoor...
Tools you might need / Tools I Used:
Makita impact driver - amzn.to/2rtIE2H
Screwdriver - amzn.to/2L7AtSP
Long nut setter set - amzn.to/2UxRn15
Screwdriver bit set - amzn.to/2En9aTX
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Thanks, you saved me a ton of time Fortunately with my search for flashing yellow light and rpm. You were the first video to pop up. Found a little grease on the wheel.
Thank you. I have a CREAFTMAN 139.53930DM. Yellow light near learn button was blinking 5x indicating RPM Sensor Failure or Motor Failure. Travel was short and inconsistent as you demonstrated in your video.
Replaced RPM Sensor and has been working flawlessly for a day now.
Been struggling with this rpm sensor issue for weeks. Subbed for more content. Thanks.
Thanks!
Thank you for your video explaining how this worked. My opener had exactly the same symptoms. I found the speed sensor and it appeared to be in its proper place, but as I was moving the chain up and down I noticed one of the plastic tabs had some crud on it. I cleaned off the tab and it began working perfectly again. THANKS!! You saved me a couple hundred dollars and a days work.
Randy Moffatt happy to help ! Thanks for commenting
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@Graham Felipe Glad I could help :)
I have an ancient Sears opener for which the RPM sensor part has been long obsolete. I mistakenly bought a very similar part (41C4398A) but it had a completely different mounting. HOWEVER, I noticed that the sensor component from the new part could be desoldered and resoldered to the old part. My old part had two discrete components --a infrared LED and an opposing optical transistor (receiver). The new part had these two combined into one black plastic housing. The solder hole pattern was the same on both! Just be sure to follow the correct orientation as printed on the board. There is a diode symbol on the part that is hard to see. Voila, I did it, and now I don't have to buy a whole new opener. Good try Sears.
Impressive fix 👏🏻 You learn something new nearly every day thank you for the information 🙂
Thank you! I just replace my rpm sensor and the garage door opener works like new
Incredibly helpful video. I was thinking this could be my issue but the difference is my door just stops at random points and does NOT reverse back to the home position. I've checked everything else and all is ok. Only unknown is the logic board.
Barkinmarmot more than likely you’ve figured it out without my help haha.
Barkinmarmot mine is doing exaxtly what you just described about yours, stopping in random places, did you ever figure out a fix?
Great vid, thanks.
I cleaned the rpm sensor with a q tip and alcohol and it did the trick
Good to know !
well done. I also kind of believe that because the sensor failed that it messed up the limit switch drive gear..
I forgot to tell you, the drive gear does not always engage the contact gear. I think the wear is related to the sensor previously failing...
Have you checked if the gear itself is failing ? Of the contact between those isn’t strong the bushing where the gear slides through could be breaking / broken
Thanks for the video. My RPM Sensor is in the front, not the back like your's is shown.
A lot of motors have different placements but for the most part on the openers the process is similar
great video. thank you very much, I wonder if the same RPM part works on 41A5483 model? thank you
I have a weird version of this problem: using remote...door opens a foot, stops. One more press, door goes back down then resumes opening fully. All remotes act the same. Use the wired wall mounted opener... and everything works fine. I'd love to believe the RPM sensor would be the easy fix, but that doesn't explain why it works perfectly when using the wired opener. Stumped in Phoenix :)
Hey Steve, is it possible your spring is broken? It doesn’t sound like the sensor here in my opinion.
thank you dude
Great video. Thank you! This is the exact issue I'm having. I went and got a replacement RRM sensor and replaced it, however the issue remains. The door goes down for about a second, then back up with no blinking lights. Any suggestions on the next phase of troubleshooting? Thanks again!
Which motor are you working with? Exact same RPM sensor ?
@@GarageDoorGuidance It's a Liftmaster Chamberlain model 3280. It is the exact same sensor. I realized that it actually does work when the door latch is disconnected. It just fails with the door connected. I'm going to pick up some silicone lubricant and spray the track system and see how that turns out.
Try the force knob first ? It’s the little blue guys in the back next to the Learn button. It should be around 5 on the down force
@@GarageDoorGuidance Boom. That did it. Thanks! It was already at about 6 so I bumped it up to 7. Thanks again for your help and quick replies!
Relatively quick lol when people are willing to try I’m usually able help with the simple stuff. Have a good day 👌🏻
Looks like my opener model 1345M mine seems to work alright but the yellow light keeps blinking 5 times. Thanks
It’s normal for it to flash if it’s working fine I wouldn’t worry about it too much ?
I've got a similar problem with my Craftsman 1/2 hp opener. Sensors are cleaned and aligned and led's solid, but when I go to close the door it will travel about a foot, sometimes farther, but as it gets closer to the bottom, it just stops early. If hold the button, it will still only pulse down. If I hold it still doesn't go down like as if there were something blocking the sensors. Is this a common problem with the RPM sensor also, or something similar to another common problem? Thanks in advance!
Hey JP
This sounds like it could be more of a force thing ? If you release the door you can grab the opener arm and act as if your the opener. ( you’ll need a ladder probably ) push the door down by hand by pushing the arm and you should be able to feel if there’s any resistance at any point. Have you checked power levels also ? ( blue knobs on back of unit )
With a bad RPM sensor it typically stays in one spot and won’t go “further down” as you mentioned
Hey thanks you
Hi, I find your video very helpful. I have the exact problem with my garage door opener. But it is a Genie chain glide. Does it have an RPM sensor ? Thank you.
On a chain glide I would guess the force more likely? Try to adjust the knobs on
The right hand side of the unit. ( when looking at the unit facing the house ) otherwise typically it’s not worth fixing those old chain glides.
My opener stopped working yesterday. The learn button is flashing 5 times. My trolly isn't traveling the short distance and back though. When I press the opener button, something in the motor assembly clicks but that is all that happens. I unplugged the unit, plugged it back in. Same thing. Maybe it is the rpm sensor with a different symptom?
I’d assume logic board, what kind of motor ?
Thank you!! great video! I have a overhead door legacy model 496, and I can’t find the right rpm sensor for it, part number 27204A-R . Any suggestions?
Robert Salas I know that unit has been discontinued for sometime so I’m not sure you can find it online. I looked everywhere and this is the closest thing I found but I don’t even know If it’s right.
goo.gl/NFNnBc
Wish you luck!
Thanks man!! Not sure about getting a use one, I’ll think about it, thanks for your help!!!!
My pleasure.
Something so old you might consider just getting a new one too. They aren’t all that expensive I know really cheap ones are something like $130 at HD.
Hi Andre- so I thought I needed an RPM sensor, but after watching your vid I’m not sure. The trolley is not moving but the indicator lights are flashing 5 times. What do you think?
Sounds more like a safety sensor issue. Does it open ? Can you close it by holding the wall control?
Couldn't the RPM sensor just be dirty? Blow everything out with a compressor first? Or Q-tips? Secondly does the RPM sensor use a visible LED or is it infrared? (If it's visible, that would help confirm the problem in some cases.)
It’s something you could definitely try before ordering or while you wait for a new one to come on, can’t hurt to do so.
As for question 2 I couldn’t tell you but there isn’t any visible lights on them
So mine is all the way up. When I hit the wall control it moves about 3” and blinks 4 times. When I click the remote it doesn’t move at all, but just blinks 4 times. Chamberlain says try this part. But you mentioned there isn’t any blinking. That leads me to think it’s something different. Thoughts?
Normally the blinking when trying to go down signals the safety sensors are misaligned or blocked, have you looked at those to make sure they’re not the culprit ?
My garage door is doing this but it is only traveling from closed position to open about 1 foot. The only way I can get it to go up is to block the sensors, then it will go all the way up! I ordered your rpm sensor from your website. Two questions; how fast do you ship? Does my problem sound like an rpm sensor fix ?
Have you tried to open the door manually to see if the door itself rolls smoothly? The rpm sensor usually is different in that it’ll move back and forth about a foot
@@GarageDoorGuidance ya the door rolls smoothly on its own. And mine does move about 1 foot. But the foot that is does move is when it is in the closed position, it will only move up 1 foot.
No issues closing ? What model opener
@@GarageDoorGuidance correct, no issue opening. Chamberlain liftmaster professional 1/2HP
If that’s a screw driven garage door opener try to turn up the “up” force ( little blue knob in the back of the unit ) you can also lubricate the screw itself with some grease like this one amzn.to/3Fouwvs
If it is not a screw driven operator try the blue up force as well
My garage door opens no problem (most of the time) however it consistently has the same problem you describe when i try to close it. In trying to diagnose the problem I unhook the door off the trolley and noticed that the mechanism seems to move freely and opens and closes when the door is not attached. However when I reattach the door the problem happens again - the door opens without any problems and closes about 6 inches and then reopens. Any suggestions on what else might be the problem?
Two guesses I’d have would be power levels, or safety sensors. Have you checked both of those ?
@@GarageDoorGuidance thanks your suggestion. I went out to my garage to further explore and it seems that the problem has been fixed. At least for now. Thank you for your suggestion I will keep this in mind should the problem reoccur.
THANK YOU SO MUCH
J.R. G. Happy to help!
PLZZZ HELP!!! I changed RPM SENSOR and still doing same .. up and down.. you think it's the Limiter?? TY for video
J.R. G. Does it make a click sound when it comes back up? Or do the lights flash?
Garage Door Guidance no lights flashing no noise
J.R. G. You changed both the sensor and the black wheel?
My garage door only opens about 12 inches, but it stays there. It won't move until I press the button again, and it'll go to the close position. Can this be the same problem?
Sounds more like a broken spring to me my friend, look up at the header, you can tell pretty easily a spring is split in two.
@@GarageDoorGuidance Mine is an older unit and it does the same thing. It moves about 12 inches and it just stops. Then pushing the button again causes it to come back. However, it does it even if the trolley is released and the door is uncoupled from the opener. There is nothing wrong with the door anyway. I think different openers are designed to react differently when they hit an obstruction. Some just stop while others auto-reverse. I think the problem with mine is just the RPM sensor. If it isn't working right the electronics in the opener thinks the door is stuck even if it isn't. One other UA-camr was having the same problem and he posted a video showing that a misalignment of the little collar under the interrupter wheel is what causes the RPM sensor not to work correctly. He loosened the set screw on the collar, pushed the motor shaft backwards, pushed the interrupter forward and re-tightened the set screw. Once he did that the problem went away. The misalignment of the collar causes the interrupter to get too far away from the sensor so it doesn't interrupt the light beam anymore. That's what stops the motor.
Joe Vignolo that’s a good tip there, Thanks for your input Joe. Hopefully that can help others!
Joe Vignolo I am having the exact same problem with my garage opener, was it the sensor after all? I see the link for the sensor to be purchase at Amazon, my reservation is that most, if not all of the bad reviews are consistent, that sensor apparently didn't work and there was no exchange nor refund. I am not about to throw money down the drain, so would love to hear your experience. Thank you a bundle.
Lily Cuza I hadn’t realized they had a bad return policy on the one I linked to. Thanks for that I’ll try to find one that has a good one.
Hi, I have a sears craftsman 1/2 HP, it blinks 5 times and motor did not move at all.
I check the old logic board and did not see any burn or cold solder. I just replaced a new Sears Craftsman 41A5021-3M-315 Receiver Logic Board and the light still blink 5 times. Would that be the RPM sensor?
According to internet, if RPM sensor is bad, it moved 6 inches but in my case, it did not move at all.
Based on error code, it say Motor Over Heat or RPM sensor? Should I change the RPM sensor?
Thanks for any input or information.
callmeback sunday what about the safety sensors at the rails ? Have you checked those ?
callmeback sunday you’d need to make sure both sensors have steady lights on them ( usually one yellow one green )
What if your door opener doesn’t have rpm sensor?
What’s it doing? ( capacitor possibly )
@@GarageDoorGuidance I figured out that mine is a newer opener - it doesn’t have it
Door moves 6-8 inches each way ...Fleshing 5 lights ..I installed new RPM sensor no change The sensors on the door is Green and orange seems to be OK ...What else could be the Problem ?
Otto Pelley the green can’t be flickering one bit or it will reverse and flash. The RPM sensor would not flash if it was faulty
@@GarageDoorGuidance My owners Manuel said if you have 5 fleshed it's an overheated motor ..or faulty Rpm sensor I installed new Sensor ..there was no change... What can i do ?
Otto Pelley it’s not overheated for sure?
@@GarageDoorGuidance No it's not overheating ..and the sensors at the bottom of the door are working fine... like i said i installed new sensor on the unit..and that did not change anything..the unit is still flashing ..what else can i look for...
Otto Pelley the only other thing I can think of without seeing it is the capacitor. Is there a way you can send me a video so I can take a better look? Info@garagedoorguidance.com
How much is the RPM sensor??
John Judnich for this one it’s about $15 amzn.to/2FGTdnB
average is $ 15.00 to $20.00 it depends on the make and model
Didn't work for me
Switched out the RPM sensor and disk but this did not work.
The door is disconnected at the trolley . The trolley still does not move more than a foot It moves to close and then reverses immediately to the original position.
Any suggestions?
You for sure got the correct rpm sensor ?
@@GarageDoorGuidance yes the liftmaster site calls for 041C4398A and that is what I bought. Any suggestions?
@@rogersRogers-he7fp are you getting blinking light or clicking sound when it comes back? If so it could be safety sensors. But if not then it would have to be the RPM sensor. Beyond those it would be the logic board but I’d recommend a replacement normally at that point
@@GarageDoorGuidance no blinking light or clicking sound. Solid green light on receiver and Solid orange on transmitter. Should I buy a logic board?
Okay you do not need to take down your whole unit to replace the rpm sensor that's just ridiculous
MAC THE SLOVAC I do videos on all kinds of units that have already been removed. The videos are to show you how it’s done.
MAC THE SLOVAC no, you are right, you do not need to take the unit down. But if you’re too lazy to take the unit down (which takes 5 minutes) then this is not the project for you