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Inleiding

Most common issue with this is the difficulty with which to open it up.

Gereedschap

Onderdelen

  1. Remove the brush head Using a thin screwdriver carefully pry open the bottom of the case. Using a thin screwdriver carefully pry open the bottom of the case.
    • Remove the brush head

    • Using a thin screwdriver carefully pry open the bottom of the case.

  2. Remove lower cap (2 plastic tabs). O-ring is already removed in this picture. Here are the solder connections of the battery: + (red) and - (yellow).
    • Remove lower cap (2 plastic tabs). O-ring is already removed in this picture.

    • Here are the solder connections of the battery: + (red) and - (yellow).

  3. Unwrap the battery and replace it (see Soldering Skills). To avoid a short circuit (the battery will normally still have a remaining charge), start at the positive pole of the battery and unsolder completely from the board.
    • Unwrap the battery and replace it (see Soldering Skills).

    • To avoid a short circuit (the battery will normally still have a remaining charge), start at the positive pole of the battery and unsolder completely from the board.

    • Continue with the negative pole.

    • At the end, loosen the soldering pads from remaining solder, so that the contacts of the new battery can be inserted into the board.

    • Solder teh positive and negative pole.

    • Requires a 3.7V battery, which is approximately 14mm x 49mm (similar to AA).

  4. Before assembly, check the upper seal and the lower O-ring and replace those if  necessary. Before assembly, check the upper seal and the lower O-ring and replace those if  necessary.
    • Before assembly, check the upper seal and the lower O-ring and replace those if necessary.

Conclusie

To reassemble your device, follow these instructions in reverse order.

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