HX9368/35 (Sonicare Diamond Clean), purchased 2018. 2020 I was concerned about the seal flaws, so I purchased a new designed seal from eBay, a UK seller. Fitted it. Haven't had any issues. I open it yearly to inspect internals for any corrosion. 2025(December) the "white" LED is dimmer than the others. But I've never used the other modes honestly, only ever used the "Clean" mode. I never kept it on constant charge, only when the battery indicator shows amber, then I place on charge.
I had one of the old diamondclean models and it stopped working so i ordered a new diamondclean model from philips which was useless - i ended up buying the older model from aliexpress and it worked perfectly
My sonic care finally died after 8+years of use shared with my wife. So heavy usage.
Replaced with a two pack from Costco. 1 died in about 3 months. SonicCare replaced it with an upgraded version and so far it’s been ok. The other one is fine but stays in our travel bag.
Agreeing with you, we've bought 2 of the Costco Sonicare packs and will be switching (likely to OralB) because these brushes, without fail, will loosen and vibrate as loud as a magic wand when they fail. Not a BIFL product IMO. Great product when they work, frequency and pressure sensing are awesome out of the box.
Top Electric Toothbrushes on Reddit
1
Philips Sonicare
ProtectiveClean 4100
86% positive of 42 users
Affordable, durable, great clean; strong vibration and magnet issues.
Frosty-Canary5086
