Philips Sonicare DiamondClean Circuit Board Replacement

Pull the brush head from the toothbrush.

Use a spudger to pry the chrome cap from the base of the toothbrush.

Invert the toothbrush and apply pressure against the metal tip until the internals and casing separate.

Remove the internals from the casing.

Remove the rubber covers from the circuit board and battery.

Carefully free the top end of the circuit board from the plastic clips holding it in place.

Use the soldering iron to desolder the terminals marked F1, C5, R7, R6, and JP1.

Remove the circuit board.