Full review
Longer notes from the same comments we summarized above.
What people reported
Many owners of Philips Sonicare toothbrushes, including models like the HX681A, have found success fixing common malfunctions themselves. A recurring issue identified is a loose internal screw that causes the toothbrush to stop responding, tick, or vibrate improperly. Users report significant satisfaction in performing this simple repair, often saving money by avoiding the purchase of a new unit. Some owners have even suggested applying threadlock to the screw to prevent future loosening.
Problems people mention
The primary problem reported across various Philips Sonicare toothbrushes is a design flaw involving a small internal screw that frequently loosens or falls out. This leads to the brush not vibrating correctly, being excessively loud, or becoming unresponsive. Some users also noted issues with rechargeable batteries dying after a few years, leading to the device not working off the charging stand. A few owners experienced painfully intense vibrations from their brush, suggesting other internal component issues, possibly after being dropped. Disassembling the toothbrush to access the internal screw can also be challenging for some. Owners expressed frustration that this appears to be a common, recurring problem, even on replacement units.
Where owners disagree
Given the extremely limited specific feedback for the Philips Sonicare DiamondClean Smart 9700, there is no significant owner disagreement captured in the comments. The available comments mostly align on the nature of the mechanical issues and the effectiveness of the DIY screw fix.
Who it's for
This information is most relevant for current Philips Sonicare owners, or those considering a purchase, who are comfortable with potential DIY repairs for common mechanical issues like a loose internal screw. It suggests that while some models may develop faults, they are often repairable, saving the cost of replacement.
