Difficulty

Moderate

Steps

5

Time Required

                          15 minutes

Sections

1

  • How to fix a Philips Sonicare DiamondClean HX9340 when it is getting less powerful or has a weak brush.
  • 5 steps

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Introduction

Caution: Please only proceed if your toothbrush is out of warranty. If you are still within warranty then bring it back and get it fixed by professionals at Philips for free.

What you need

Step 1

              How to fix a Philips Sonicare DiamondClean HX9340 when it is getting less powerful or has a weak brush.
  • First you need to open the toothbrush. This can be achieved by applying pressure to the lower end of the toothbrush which will alow the removal of the bottom cap.
  • To protect the toothbrush from being mared by whatever tool is used, apply some cardboard or similar between the tool and the toothbrush

First you need to open the toothbrush. This can be achieved by applying pressure to the lower end of the toothbrush which will alow the removal of the bottom cap.

To protect the toothbrush from being mared by whatever tool is used, apply some cardboard or similar between the tool and the toothbrush

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Step 2

  • Once the bottom cap is removed, use a screwdriver or a knife to release the actual insides of the toothbrush.
  • There are various How-To’s on how to do this. I would recommend to use Philips Sonicare DiamondClean HX9340 Battery Replacement

Once the bottom cap is removed, use a screwdriver or a knife to release the actual insides of the toothbrush.

There are various How-To’s on how to do this. I would recommend to use Philips Sonicare DiamondClean HX9340 Battery Replacement

Step 3

  • Once you have the insides out, you have to look for this area.
  • The silver red part are the two magnets. There needs to be a gap between the magnets and the metalic driver
  • If your magnets are contacting, or are very close to them, please proceed with the next step.

Once you have the insides out, you have to look for this area.

The silver red part are the two magnets. There needs to be a gap between the magnets and the metalic driver

If your magnets are contacting, or are very close to them, please proceed with the next step.

Step 4

  • The magnets are secured by two screws. One is easily accessible on the back of the toothbrush.
  • The screw is mounted in a slot to allow for some adjustments. For whatever reason the screw has moved to the top of the brush, this will let the Magnets touch the driver which reduces the motion and power of the brush significantly.
  • Loosen the screw on this side.

The magnets are secured by two screws. One is easily accessible on the back of the toothbrush.

The screw is mounted in a slot to allow for some adjustments. For whatever reason the screw has moved to the top of the brush, this will let the Magnets touch the driver which reduces the motion and power of the brush significantly.

Loosen the screw on this side.

Step 5

  • Apply some pressure to remove the circuit board and get access to the screw holding the magnets on the front side.
  • If is has moved, loosen the screw, position the the magnets in a way that there is a gap between magnets and driver and fasten both screws.

Apply some pressure to remove the circuit board and get access to the screw holding the magnets on the front side.

If is has moved, loosen the screw, position the the magnets in a way that there is a gap between magnets and driver and fasten both screws.

Repeat the steps in reverse order to reassemble your device.

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Clys - Feb 3, 2017

Reply

Hi there, this was my problem combined with the loose actuator screw. Mine works great now. I used a credit card as a spacer between the magnets and windings, do you know if more space is necessary for the best performance?

chip - May 31, 2017

Reply

Saved me ~$100! Awesome!

Jan Huijsmans - Aug 5, 2017

Reply

Good manual, I could fix the gap between the magnets. However, that was not the problem in my toothbrush. After pressing the power button the light for the selected program flashes once and after that all flash on and the toothbrush shuts down. It refises to start anything, it’s almost as of there is a counter for the maximum amount of charges.

Diederik Knaapen - Sep 11, 2017

Reply

saved me from buying a new toothbrush, thanks!

jrj90620 - Sep 25, 2017

Reply

Have the same question as Clys.Wish I could know the correct gap measurement.I also used a credit card,which measured .9mm.Maybe 1mm is the correct gap.I know that if I contact Philips the chances of reaching anyone knowing anything would likely be impossible.If I bought a new brush,took it apart,that would be a way of finding out.