The opener head vibrates and makes a rattling noise, especially when the door is fully open or closed.

Safety first: Unplug the opener before tightening screws or removing covers.

• Tighten cover and lens: Check all screws holding the plastic or metal cover and light lens. Tighten them snugly.
• Inspect internal hardware: With the cover off, check that the motor, rail bracket, and board mounting screws are tight.
• Add vibration isolation: If the opener is mounted to metal straps, consider adding rubber washers between the opener and the straps.
• Check door balance: An unbalanced door can increase vibration; have the springs adjusted if needed.