Einleitung
If you are having issues hearing other people on the TC-580 or the sound is distorted you will want to consider replacing the speaker. This will require some knowledge of soldering which could damage the circuit board of the radio, use other repair options unless you are confident in your soldering ability.
Werkzeuge
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Remove grey nut from base of volume knob by turning it counterclockwise with a set of tweezers.
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Remove the brass washer from the base of the antenna slot by turning it counterclockwise with a set of tweezers.
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Using a plastic opening tool, pry in between the plastic case and metal circuit board to remove the board.
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Apply a soldering iron to the solder joints to remove the two wires connecting the speaker to the circuit board.
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To reassemble your device, follow these instructions in reverse order.