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Chamberlain whisper garage door opener troubleshooting.
Turn the screws one full turn in a counterclockwise motion towards the decrease button.
Disconnect your chamberlain garage door opener from the garage door by pulling the emergency release handle down and back towards the garage door.
Leave the door open and turn the adjustment screws located on the side of the overhead motor.
Manually lift the garage door and release it when it is opened halfway when the door is appropriately balanced it will neither move up or down but stay in place supported by the springs.