How to Get the Trolley off the Stop Bolt or Stop Tab
Use these troubleshooting steps if the trolley is stuck on the stop bolt or stop tab.
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Clicks and Hums
Learn what to do when your garage door motor hums but does not open from Chamberlain Group. Find solutions for when your garage door opener just hums.
Here are possible solutions to try when the garage door opener hums and the door does not move.
The following garage door openers will have different resolutions:
- Chain or belt drive openers.
- Screw drive openers.
- Wall-mounted openers.
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To prevent possible SERIOUS INJURY or DEATH:
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Resolve Humming Issues For a Chain or Belt Drive Opener
| Brief Hum | The Springs May Be Broken | Contact a trained door technician |
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| Brief Hum | The Door Lock May Be Activated | Disable the door lock |
| Brief Hum | The Trolley May Be Stuck on the Stop Bolt or Stop Tab | See How To Get The Trolley Off The Stop Bolt Or Stop Tab |
| Hums for About 30 Seconds | The door may not be connected to the garage door opener | Depending on your opener, you may see only the trolley move along the rail when you activate the opener. Ensure the door is connected to the garage door opener. Use the emergency release handle to reconnect the door. See How To Disconnect The Garage Door Opener To Manually Open Or Close The Garage Door. |
Resolve Humming Issues for a Screw Drive Opener
| Brief Hum | Springs May Be Broken | Contact a trained door technician |
|---|---|---|
| Brief Hum | Door Lock May Be Activated | Disable the door lock |
| Hums For About 30 Seconds | The Door May Not Be Connected to the Garage Door Opener | You may see the rack along the inside of the rail of the opener. Ensure the door is connected to the garage door opener. Use the emergency release handle to reconnect the door. See How To Disconnect The Garage Door Opener To Manually Open Or Close The Garage Door. |
| Hums Longer Than 5 Seconds | The rack may be stripped | Check the rack, a black piece that runs up and down the inside of the rail. If it is worn, replace it. |
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