How to Fix a Philips Sonicare DiamondClean HX9340 with Reduced Power
This guide provides instructions for repairing a Philips Sonicare DiamondClean HX9340 electric toothbrush that has lost power or has a weak brush.
Introduction
If your Philips Sonicare toothbrush is not as powerful as it used to be, it might be due to a misalignment of the magnetic motor, possibly caused by dropping the device. Philips designed the toothbrush in a way that may require opening it to realign the magnetic motor.
Caution: Please only proceed with this guide if your toothbrush is out of warranty. If it is still under warranty, it is recommended to contact Philips for professional repair at no cost.
Tools Required:
- New Item (1)
Step 1: Opening the Toothbrush
To begin the repair, you need to open the toothbrush. This can be accomplished by applying pressure to the lower end of the toothbrush, which should allow the bottom cap to be removed.
To prevent cosmetic damage to the toothbrush from the tools used, it is advisable to place a piece of cardboard or similar material between the tool and the toothbrush.
The following image shows the toothbrush being held in a clamp, with pressure being applied to the bottom cap for removal.
[Image: Toothbrush handle secured in a clamp, with the bottom cap exposed and ready for removal.]
Step 2: Accessing the Internal Components
Once the bottom cap is removed, you will need a screwdriver or a knife to carefully release the internal components of the toothbrush.
There are various methods for this process. A helpful resource is the 'Philips Sonicare DiamondClean HX9340 Battery Replacement' guide, which details similar disassembly steps.
[Image: A question mark icon within a box, indicating a missing or placeholder image for this step.]
Step 3: Inspecting the Magnetic Motor
After accessing the internal components, locate the area containing the magnetic motor. This area is identifiable by a silver-red part, which consists of two magnets.
It is crucial that there is a small gap between these magnets and the metallic driver. If the magnets are touching or are very close to the driver, proceed to the next step to correct this.
[Image: Close-up of the internal components of the toothbrush, highlighting the magnetic motor assembly with an arrow pointing to the magnets and driver.]
Step 4: Adjusting the Magnetic Motor Screw
The magnets are secured by two screws. One of these screws is easily accessible on the back of the toothbrush.
This screw is mounted in a slot, which allows for adjustments. If the screw has moved upwards towards the top of the brush, it can cause the magnets to contact the driver. This contact significantly reduces the motion and power of the brush.
To fix this, loosen the screw on this side.
[Image: Close-up of the internal components showing a screw in a slot, highlighted with a red box, indicating the screw to be loosened.]
Step 5: Final Adjustments and Reassembly
Apply some pressure to remove the circuit board and gain access to the screw that secures the magnets on the front side of the toothbrush.
If the magnets have moved, loosen this screw. Then, reposition the magnets to ensure there is a gap between them and the driver. Finally, fasten both screws securely.
[Image: Close-up of the internal components showing the circuit board being removed to access the front screw for magnet adjustment.]
After completing these steps, repeat them in reverse order to reassemble your device.
