Finally, pull off the brush head and discard it. Good to hear you were successful in repairing your brushes. Dont do as I did and put the battery in the wrong way round! Using my meter I was easily able to identify the correct polarity and connected it up correctly. First, locate the power button on the handle of the toothbrush. Great fun getting the soldering iron out after 30 years. This makes it more difficult for the toothbrush to be repaired (see below.). I hade some problems with desoldering the battery from the charger coil. is the way one solders the thin copper wires of the pressure device important? Keep up the good work, It took a little time but more importantly for me was that I didnt need to replace it in this throw away world. Hi Jim, it sounds like it could be water ingress that has damaged the motor. Read More Are Electric Toothbrushes Worth ItContinue, Read More How to Charge Electric Toothbrush Without Charger: Easy WaysContinue, Read More Can Electric Toothbrush Remove CalculusContinue, Read More Can an Electric Toothbrush Cause Sensitive TeethContinue, Read More Can Electric Toothbrush Whiten TeethContinue, Read More What Does an Electric Toothbrush DoContinue, Your email address will not be published. I tried the battery replacement in one of my Braun 3756s some time back and it didnt work, even though everything looks OK. Today I did the second of the pair and this one appears to be working fine. Diagnosed easily by Rob and the brush now works a treat. Align the three recesses on the iO's silver bottom cap with the notches at the bottom of the charging station. this time absolutely remembering the correct battery polarity! Fantastic instructions and replacement batteries I have just done my third one thank you for your help. Another toothbrush saved from an unnecessary demise, thank you Ionic. Water can cause corrosion, staining and crystal formation on the circuit board rendering the brush no longer functional. I wouldnt have attempted this without a solder sucker. I purchased a longer replacement battery for more time between charges. Hi, Different brushing modes use varying amounts of power from the brush motor causing more or less intense vibrations at the brush head. I followed the guide and replaced with a larger battery. light off for a few seconds, red light for half second or so, then off for few seconds repeatedly). Customer Support Place bristles against teeth at a 45 degree angle and allow brush head to rotate against teeth while keeping pressure light. Check the positive metal battery tag nearby too as they are very close. Make sure the battery tag has been narrowed and folds closely around the edge of the PCB. As an Amazon Associate, I earn from qualifying purchases. When a brush handle is placed on the charging stand do any lights flash/blink? ToothShow is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. If the handle is used with tap water filtered from sea water with a high residue of sodium chloride. Unfortunately my rusty soldering skills melted the plastics holding the pressure warning light wires. I`m guessing that the element responsible for checking battery capacity is damaged. Before connecting your new Oral-B electric toothbrush to the Oral-B app, make sure your brush is fully charged. If you have a smart (Bluetooth enabled) toothbrush, that has been paired to the smartphone, within the app you can change the order of the modes to suit you. The oscillating-rotating technology and high-speed bristle movements help to remove more plaque from teeth and gums, ensuring better oral hygiene. I have rechecked soldering. The connection is usually a small solder connection between the +/- terminals of the battery that connects this to the main printed circuit board. Bon Chance! Could you please help. 3. Ill see how it goes tomorrow. Rinse the attachments thoroughly and let them air dry. I also confirm that I am at least 18 years of age and that I have read and agree to the P&G Terms and Conditions - Yes if the voltage of the country you are travelling to is higher than 110V What is a plug adapter? The sound comes from the working frequency of the voltage converter and can be heard in very quiet environments. Hopefully the new right-to-repair legislation will increase repairability on small appliances and make all repairs easier too. The internals are made of a very easily melted plastic and it is looking a little messy now that it is on its second replacement battery. Hi Daniel, This is a reliability factor the bends in the solder tags are to prevent the vibration of the toothbrush from breaking the solder joints or lifting the solder pad off the PCB. Thank you for guide. . Is the pressure sensor LED blinking in sync with the green charging LED? Thank you for this great guide! The voltage is no different to the original battery. Good to know it works before reassembly. Stand the toothbrush tip-first in hot water (60 degrees C) for 5 minutes to soften the plastic and make the ring easier to remove. During the time I was fixing it, by manually spinning the plastic cogs, the motor seemed to warm up quite a bit.
Oral B Wireless Smart Guide Display / Timer Type 3742 Run through all our troubleshooting tips as this is likely to be a short or a broken coil wire. In summary, an excellent set of instructions that achieve the end result in a very easy to follow manner. Follow the same procedure to enable it again. Old worn brush heads can also seem to be less effective or powerful in their rushing action. Stand the handle upside-down in the hot water again to soften up the plastic ring around the top shaft. It sounds like there is a short circuit somewhere, possibly at the side of the PCB where the super-fine wires terminate, the ones that run to the LED near the shaft. Its 2022 and we can repair an electric toothbrush with thanks to TBB.com :-}. After brushing, rinse the brush head for several seconds under running water with the handle switched on. Sometimes it takes up to an hour before the toothbrush even acknowledges that its charging! I partially discharged the new battery externally to see if that would help again, no joy. Although the finished job looked messy it worked first time. Detailed images helped so well, and I got to use my solder pump for the first time! The resistence of motor in dc is only 0.16ohmi. However, knowing the right troubleshooting steps can make the task a lot easier. Disassembling an Oral-B Braun electric toothbrush may be necessary for cleaning, maintenance, or troubleshooting purposes. Thanks for your reply. It was charging the old battery previously so I am not sure what happened. Powered the motor with the battery via jump leads and still no joy. After all, its not something you do very often. With a light-medium pressure, you should hear the sound of the motor in the handle slowing/straining a little and the light should come on. No problems at all, just takes a bit of time as it was the first time. A very fine point soldering iron and needle nosed pliers are essential and great care must be taken. We had one snag, the two copper wires on the side broke but I think they were long enough to solder back on. To open an Oral-B Braun battery operated toothbrush, follow these steps: Pro tip: Make sure you have the correct type of battery, as it can affect the performance of the toothbrush. Any ideas? I replaced my battery with the larger 49mm 2200 mAh as you have mentioned in your instructions. Any suggestion? I looked at the online copy of the instructions, but there is no info on a faster blinking. Seattle Washington USA. What Do You Do If Your Oral-B Toothbrush WonT Charge? I completed the upgrade to the larger capacity battery. The instructions are excellent; very clear and detailed. Required fields are marked *. Thanks for the guide and providing the battery. Great instructions. Just keep that in mind on the tabs for the replacement battery. Doing so will invalidate your warranty and may even render the brush broken for good. Replaced the battery with long life version. How do I take it apart? If its still stuck, try gently prying it off with a flathead screwdriver or butter knife. Learn How do I clean my Oral-B iO Electric Toothbrush? Faster than the original green blinking when it charges. No matter. Any thoughts?
Oral-B 3772 Manuals and User Guides, Electric Toothbrush Manuals All Any thoughts? What a fantastic guide! (will measure voltage when I can) Then, take out the battery and unscrew the base of the brush head. I would strongly recommend using a desoldering pump as stated in the instructions. If the toothbrush is turning itself on, without any interaction from you, then there is a fault with the handle that requires repair. One minor word of warning If modifying the battery carrier to take a larger (49mm) battery be very careful not to break the clip mounted on the end of the carrier that holds the circuit board onto the carrier when fitted.
Then when you put it back on the charger again, it starts charging. They may have a special tool that can safely remove the cover without damaging your toothbrush. Many Thanks. Check it out! Feel like its a voltage detection circuit error. Not sure why this should happen, the bigger battery should not cause overload. Similarly, the amount of solder applied should be minimal as components are closely spaced and short circuits must be avoided. Once the head is removed, you can clean it by rinsing it in warm water and drying it before putting it back on. Interestingly when the new battery then became low (as expected), I then kept the toothbrush by itself, without charger until the pressure-sensing light eventually fully drained the battery (and hence no more flashing pressure sensing light after some number of hours or so) and I notice that a recharge of my toothbrush from a totally drained battery state will charge the battery up to full capacity again. How to Get Battery Out of Oral B Toothbrush, How to Change Brush on Oral B Battery Toothbrush, How to Tell If My Oral B Toothbrush is Charging. Hardest bit is getting the case apart, there are two major clips 40mm up from the USB socket to free, a plastic guitar pick is essential. Sincerely. A further charge (another 12 hours plus) didnt help and it now goes flat almost immediately. How do you open a battery operated toothbrush? Hi David, good work with the install and checks strange that its not working Have you tried leaving the brush on the charger for an hour? Then re-fit the spring and use a small spot of superglue on just the plastic tab of the clip to keep the base shut. Another toothbrush saved from the landfill! It will not charge. I re solder, now red light blinking only when I press the power button. So important to keep it watertight. I must have soldered and desoldered, and then soldered back everything again 3 times and the battery and charger connectors maybe 2 times more. An illuminated magnifying glass helped a lot. Enjoy cleaning it all before eventually poking it back in your gob. Think Ill give repair a miss. Pair the Oral-B iO with a toothpaste containing Stannous Fluoride like Crest Gum Detoxify, its activated foam formula removes plaque bacteria in hard-to-reach areas to better reverse gingivitis.