Replace a faulty battery in Marshall Monitor Headphones

Step 1

The battery is located in the right cup of your headphones. First you need to remove the ear cushion. Insert a spudger between the cushion and the cup and move it around the cup to remove the cushion.

Step 2

Remove the four screws to take off the membrane from the cup.

Step 3

Carefully remove the membrane part from the cup. Take care not to damage any cables.

Step 4

The battery is glued to two strips of sponge rubber who serve as spacers. Insert the spudger between the battery and the rubber to remove the battery.

Step 5

With a soldering iron remove the cables of the battery from the board. Take extra care to prevent the cables from touching!

Step 6

Prepare the new battery. You might have to shorten the cables a bit first. Take care here as well that the cable ends don't touch.

Step 7

Prepare two strips of double-sided tape (carpet tape) and apply them to the sponge rubber strips. Remove the protective film and place the battery. Press down lightly.

Step 8

Place the membrane with the electronics back in the cup. Before putting the screws back in place do a quick test if the headphones work (turn them on).