Philips Sonicare DiamondClean HX9340 Akku austauschen

Thanks for information. This guide leads to success. *Thumbs up* My Sonicare is back at work now. :-)

Really useful.

It’s very helpful, I like it very much!!!

I just curious why the jumper have to be desoldered, is this jumper will limit the charge counter?

You have to resolder the jumper when done else it doesn’t work, I presume its a safety thing because you are working with a live battery and a metal tipped soldering iron. I would recommend looking at the other guide for magnet adjustment on here and carrying that out when the battery is removed, I expect most will need this done after some use the coil and magnet move closer together, toothbrush gets noisy and weaker. for reference my battery was a sony one not sanyo. the part number 4235 010 13068. They are 14500 battery with tabs for PCB mount. the specific ones sold on ebay are expensive and possibly fake. I just got a pack of 4 soshine 14500 900mAh and soldered wires on to attach to the pcb

you have to resolder the jumper, it is required. this must be a saftey thing to isolate battery from pcb while you work on it. recommend that magnet adjustment is done while you have it apart. I used soshine 14500 900mAh battery and soldered some wires to it for pcb attach. I didn’t truest the probably fake specific batteries on ebay that are being sold at inflated prices. The battery I removed was a sony one not sanyo as being sold on ebay. p/n 4235 010 13068

The “jumper” solder points need to be bridged again for it to work

my toothbrush had a sony battery in it and was about 5 years old when I replaced it. Some of the replacements available on popular sites are not sony. I opted to buy a good brand 14500 battery without the tabs and just solder my own wires to it.

While you have it apart I recommend that the other ifixit guide is followed to get the correct distance between the coil and magnet for best performance

Has anyone found a source for the small rubber o-ring that is on the outside under the plastic toothbrush for a model HX9340? Mine disentigrated and I do not know size or type.

Who’d’ve thunk a toothbrush had so much in it. Is that a microprocessor and a serial comms port I see??

Got mine apart in no time at all. Checked the battery voltage (3.8V so that’s OK). The mode LEDs all light up, but the on switch doesn’t turn it on. It was quite wet inside though, probably damaged some of the delicate electronic wizardry. Not a great O-ring seal.

Thanks to ifixit for prompting me and helping me to have a go though.

Hi. Just removed mine. Some comments:

Step 3: No need to use a screwdriver to pry out the end cap. Slowly pressuing the handle, while rotating around, it will work itself out. This is better to avoid damaging the end cap and o-ring (as seen in the pics step 5).

Step 6: I just tapped the bottom on the table and it fell down. No need to press inside sides and push end.

Rgds

I did replace the battery, placed in the charger and It started blinking green light. In the morning toothbrush was charged but after assembling back I pressed a button and It worked for 3 seconds two times and now it’s again not responding. What may be the reason?!

Sanyo battery replaced with Sony as given in electronic store as a spare battery for HX9340.

Vielen Dank für die tolle Anleitung. Meine Zahnbürste funktioniert wieder tadellos.

Hallo,

habe meine Zahnbürste erfolgreich zerlegt, den Akku nachgemessen - ist voll mit 3,8 Volt. Sobald ich den Anschalter betätige, zuckt der Magnet nur mal ganz kurz und man sieht ein sehr kurzes Aufflackern einer LED (auf der Platine neben CR2). Die Zahnbürste verweigert aber nach wie vor den Betrieb. Was kann das sein?

Stefan