The receiver about a garage door opener is situated adjacent to the engine, inside the outer cover of the unit. When you press the button on one of these remote components, or otherwise send a signal via your telephone, the signal is transmitted to the receiver, then triggering the motor. If the signal isn’t received, nothing occurs. If the button on the garage wall nevertheless operates the engine, and the batteries in the remotes are good, the problem lies with one or more of those parts in the receiver.
Components
Taking a look at the installation and operating instructions for your opener, you should get a circuit diagram of the receiver. If you don’t have the booklet, then you can get 1 online or through the producer. The parts include a channel selector, diodes, a coil, a signal amplifier, FM modulator and incorporated resistors. If you have tried reprogramming the channels on the unit and also the remotes and receiver doesn’t respond, it is likely one of those electronics have deteriorated or collected dust and debris into the level which the sign is not getting through. Occasionally a thorough cleaning with an electrode spray cleaner can solve the situation. If not, the receiver can easily be replaced with one that’s compatible with your own helmet.