#amplifier #troubleshooting and #repair
Many things can go wrong with amplifiers, the most common being operator error. That is, if everything lights up but there is no sound, the speaker wires may not be connected or the speaker button may not be selected. Otherwise, the cord may be damaged or an internal fuse may be blown.
One of the most common causes of receiver problems is oxidation of electrical contacts and jacks. A jack is the connector used to mate a wire or plug to a circuit. A jack or plug that has gunk on it won’t conduct electricity, so the next device in line doesn’t get the signal.
Often, the problem is not in the amplifier but in one of the connections between it and either a source or the speakers. Use a continuity tester or a multimeter to check continuity of audio cords going in and out of the amplifier before attempting to open the unit up and look further.
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