Step 2Open the Case
Disconnect the mobile's armature from the control case, and unscrew the box from the side of the crib. Remove the batteries. Undo the four triangular screws connecting the two halves of the case.
Inside you'll see two wires connecting from the control board on the front half to the battery compartment on the back. Be careful when you open the halves, and especially where you set down the back half. If you stress those wires and break one of the solder joints, you'll have to fix it yourself.
The "volume switch" (a simple two-position SPST switch with three contacts) is also mounted on the rear half of the case, with three wires (red, white, and black) leading from it to the circuit board mounted in the front half. Again, be careful not to stress these wires or you'll have a much larger project on your hands.
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