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    HX9990/11 Prestige 9900 Power Toothbrush with SenseIQ NEW
    Please be aware that your product may differ in color from this picture, but the support information is same
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    Prestige 9900 Power Toothbrush with SenseIQ

    HX9990/11

    My Philips Sonicare toothbrush makes loud noise

    Philips Sonicare Toothbrushes use powerful vibrations which produce up to 62,000 brush strokes per minute. The sound produced is louder than a manual toothbrush with no vibration. If this is your first electric toothbrush, it can take a while to get used to electric brushing.

    If you find the noise level abnormal, try our troubleshooting advice or see the video below to fix this issue.
     
    Play Pause

    Identify where the noise is coming from

    Remove the brush head. Do you still hear the same loud noise after removing the brush head?

    If yes, the noise is coming from the handle. Please contact us for further assistance.

    If no, (the noise is less) the noise might be coming from the brush head. Read the next tip.


     

    Brush head not attached properly

    Reattach the brush head. Make sure that the brush head is well placed and not loose or wobbly. A small gap between the handle and the brush head is normal. This is needed for vibration.
     

    Brush head is worn

    If you used the same brush head for more than three months, you might need to replace your brush head. As brush heads wear out, they may start to produce more noise. We recommend replacing the brush head every three months.

     

    Use authentic Philips brand brush heads

    Counterfeit brush heads may make more noise than genuine Philips Sonicare brush heads. We recommend you use genuine Philips Sonicare brush heads. You can buy these from our online shop

    If these tips did not solve your issue, then please contact us for further assistance. 
     

    The information on this page applies to the following models: HX9990/11 , HX9990/13 , HX9990/12 , HX9630/15 , HX6781/02 , HX9924/65 , HX6351/41 , HX9690/07 , HX9690/06 , HX9902/64 , HX9902/67 , HX9902/66 , HX9902/65 , HX6481/11 , HX6481/13 , HX6481/12 , HX9924/62 , HX9944/12 , HX9944/11 , HX9685/03 , HX3281/68 , HX9610/17 , HX9690/05 , HX9610/18 , HX9610/16 , HX9680/01 , HX3411/04 , HX3411/05 , HX6711/68 , HX6732/60 , HX9354/75 , HX6911/76 , HX9331/43 , HX9903/61 , HX9371/71 , HX9361/69 , HX9351/57 , HX6325/70 , HX6963/74 , HX3211/65 , HX6857/43 , HX6877/73 , HX6871/49 , HX3211/62 , HX6820/60 , HX6827/11 , HX6252/86 , HX6829/81 , HX9903/01 , HX9957/51 , HX9903/41 , HX9903/21 , HX9903/11 , HX6810/50 , HX9985/01 , HX6888/18 , HX6877/21 , HX6876/21 , HX6870/41 , HX6817/01 , HX6816/01 , HX6815/01 , HX6812/01 , HX6964/77 , HX9924/01 , HX9985/48 , HX9985/28 , HX9985/18 , HX9985/08 , HX9924/41 , HX9924/21 , HX9924/11 , HX6211/05 , HX9192/01 , HX9194/08 , HX9193/04 , HX9193/03 , HX9343/10 , HX9383/76 , HX9383/62 , HX9383/57 , HX9383/10 , HX9332/10 , HX9392/90 , HX9392/05 , HX9372/10 , HX9362/10 , HX9352/10 , HX6582/51 , HX6321/02 , HX3211/03 , HX3211/33 , HX3211/23 , HX3211/12 , HX9143/02 , HX3211/17 , HX6211/99 , HX9371/04 , HX9188/11 , HX6211/07 , HX9172/15 , HX8911/02 , HX9382/74 , HX9142/32 , HX9182/34 , HX9182/32 , HX6362/02 , HX6392/02 , HX6962/73 , HX9382/54 , HX9181/25 , HX6211/98 , HX6681/07 , HX6581/50 , HX9342/03 , HX9181/26 , HX6211/04 , HX6631/24 , HX9362/68 , HX6211/96 , HX6311/07 , HX9352/04 , HX5661/99 , HX9170/10 , HX5610/00 , HX5610/04 , HX6512/55 , HX6733/90 , HX9382/05 , HX9332/03 , HX9332/12 , HX9332/05 , HX9332/04 , HX6511/02 , HX6972/10 , HX6311/02 , HX6911/02 , HX6942/10 , HX6932/10 , HX6732/80 , HX6511/50 , HX6582/50 , HX6711/02 , HX6732/02 , HX6982/03 , HX6902/02 , HX5361/29 , HX5752/02 , HX5751/02 . Click here to show more product numbers Click here to show less product numbers

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