When a Craftsman garage door opener stops responding entirely to handheld remotes, wireless keypads, and hardwired wall push buttons, the issue is typically caused by a complete loss of electrical power (such as a tripped circuit breaker, blown fuse, or unplugged power cord), an engaged vacation lock switch on the multi-function wall console, or a complete logic board failure. Callout type="warning" title="Electrical Safety Warning": Verify circuit breaker status safely without touching exposed terminals. Verification: Check that the motor unit's internal light bulbs or diagnostic status LEDs illuminate when power is verified, indicating active electrical connection.
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