A loose actuator screw makes the toothbrush useless as it prevents the engine to drive the actual toothbrush that is attached to the top of the device. However, repairing this failure can be achieved in just a few steps.


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  1. You will need two screwdrivers:
    • You will need two screwdrivers:

      • a 6.5mm flathead and

      • a small Phillips #1.

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  2. Take the flathead screwdriver.
    • Take the flathead screwdriver.

      • Insert it into the slot located at the bottom of the handle and turn counterclockwise to release the bottom cap.

      • The second image shows the amount of turning needed to loosen the bottom cap.

      • Be careful with this as the plastic is not very solid. Deforming the material could result in issues when placing the device onto the charging station.

    • Hold the handle upside down, and push down on the shaft to release the internal components of the handle.

    When i tried all i acheived was scratch away some plastic on the bottom hole. ANd i could not see anything that would require a counter-clockwise turn or any movement from the bottom side at all.

    In the end i've just used something to push against the brush holding part and the whole thing came apart without damage.

    Ralf - Yanıt

    Hey Ralf,

    did you recognize any difference in composition of your device? Perhaps, the manufacturer changed it.


    Baschtl - Yanıt

    Unfortunately I ended up stripping the bottom plastic screw hole trying to get it off as it didn't twist out. Can you post more details pics showing the starting position of the slot and the ending position when it's unlocked? How many degrees did you need to turn it before it came out?

    fixme - Yanıt

    Hi @fixme,

    I added an additional picture to the second step that hopefully shows amount of turning needed to loosen the bottom cap. It's probably ten to fifteen degrees.



    Baschtl -

    If you have a FlexCare 69xx handset, then Ralf is correct, no screwdriver needed, just push the metal part (brush holding part) hard to e.g. a wall.

    The rest is the same.

    Tobias - Yanıt

    Does anyone know how to open a Sonicare HX8912 or HX8910.First number is box part number and second is on bottom of brush.I took off the bottom but pushing hard on brush shaft end doesn't cause assembly to pop out.I don't want to break it pushing too hard,if there is some other way to pop out the innards.

    Jon Jensen - Yanıt

    • Carefully pull the internals out of the casing.

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    • Take the small Phillips screwdriver.

      • Tighten the small screw that can be found near the top of the device internals

    • Pro tip: I experienced that the screw comes loose after just a few days if you do not take further actions.

      • Hence, unscrew the screw completely and put some superglue at the end of it. Then tighten it again. This prevents the screw to get loose due to the vibrations.


    eine wunderbare Reparaturanweisung !

    Nur leider mußte ich die etwas modifizieren !

    Also bei mir funktionierte die Vibration auch nicht mehr.

    Jedoch hatte sich an meiner Zahnbürste nicht die Schraube am Kopf gelöst sondern….einige Zentimeter weiter die Fixierung der Spule !

    Nachdem ich die Schraube der Spule ganz gelöst hatte (Lage der Schraube unmittelbar vor dem Schaltpanel) konnte ich die Spule etwas bach hinten verschieben.

    Dann die Schraube angezogen und die Vibration war wieder vorhanden !

    Vielkeicht hilft mein Kommentar dem einen oder anderen !

    Vielen Dank für diese Beschreibung, hat mir unterm Strich geholfen

    uwe.jogmin - Yanıt


To reassemble your device, follow these instructions in reverse order. Be sure not to insert the internals of the device twisted. Close the device by using the flathead screwdriver and imposing some pressure upon it. Finally, if the internals are in the enclosure close the device by turning the bottom cap clockwise.

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Üyelik tarihi: 02-12-2012

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thanks for that one - you rescued ours from a premature trip to the landfill :)

Olaf Draeger - Yanıt

Great guide. Thanks. I just tried doing this to mine but quickly found that the housing the screw goes into was broken completely in half. I wonder if I JB Weld would be strong enough to hold it together.

chiefbozz - Yanıt

Excellent guide; a simple fix saves $$ and waste. Thanks!!

David Sands - Yanıt

Thank you! It's realy help me!

Алексей Жерихин - Yanıt

Did the superglue tip work longterm? I'm just concerned if this approach fails then the glue residue is a mess along the threads. Send feedback!

Gideon - Yanıt

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