If your Chamberlain garage door opener works only intermittently, the issue is typically caused by radio frequency interference from nearby electronic devices, weak handheld remote batteries, misaligned safety reversing sensors, or loose wire terminal connections on the back panel. Additionally, if the motor logic board suffers from power fluctuations, it may skip commands until power-cycled. Callout type="warning" title="Electrical Safety Warning": Turn off power at the main breaker before inspecting terminal wiring. Verification: Test the door using both the hardwired wall push button and handheld remotes to isolate whether the fault lies in radio transmission or motor power.
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