How do I replace the cable on my ATH-M40 or ATH-D40 headphones?
Firstly, remove the old pads by placing your finger under the inside of the pad and pulling diagonally out and up, away from the headphone, working the loose pad all the way around the ear cup.
Then unscrew the 4 screws under the pad and separate the ear cup. Inside the ear cup you will see the cable attached to a screw-port on the PCB board. Loosen the screws to release each of the 3 cables then untie the knot to remove the cable. Thread your new cable into the headphone and loosely knot the cable.
Place the three cables into the correctly marked screw port and tighten, check they are firmly in place and then place the knotted part of the cable into its original slot.
Push the pads in place by pushing the pad lip into the gap on one side, using your finger underneath the inside of the pad to lift the pad. Work the lip into the gap all the way around. You can also use a flat head screwdriver under the lip of the pad, taking care not to damage the pad by working it over the top of the headphone and then into the gap.
