Why will trimmer not turn off after contact with water?
After using trimmer head came into contact with water. It came on and will not turn off.
Because the design is bad. Likely a floating input pin to the microcontroller. I disassembled it and found out that just by touching the switch solder pads, it can turn itself on or off.
I went through two of these things and both had the same behavior. I don't want to reverse engineer it, so I will likely just redesign the whole electronics.
I haven't the slightest clue why. Must be something to do with the moisture on the switch and electrical conductivity. plugging it in and taking it out may override the connection. However, this is iffy, disassembling and re-assembling unit did not help either. seems that it will correct itself after drying out.
So After using my Razor (The Philips Norelco 9000 model) I noticed that the on/off activator switch was not working. At first I thought it was broken but then, I came on here to this Website Ifixit.com and found some answers not everything but some Ideas. I was annoyed. I then decided to open it up realizing after reading @Jstanman’s comment about moisture that the moisture that got into the machine messes with the conductivity (those are his words). Here’s the plan:
Step 1: Open up your Philips Norelco 9,000 Preferably with a set of small 2.4 mm Flathead screwdrivers or just any old flathead screwdriver you can wedge in there. I managed to free it up a bit then just pry it open with my nails.
Step 2: Once you’ve got your Philips Norelco 9,000 open you’re going to want to grab a rag of some sort i used what is known as a microfiber cloth and dry off the inside! This is where you get to see the inside and I noticed just how flawless the inside is it’s fascinating and quite simplistic in design.
Step 3: Then just pop back on the backing and the on/off cover and your Philips Norelco should work!
I hope this helps! :-) Peace & Love,
Haha haha!!! I was finding for the answer but after scrolling through but didn't find anything helpful. My trimmer today started automatically after I washed it. It ran continuously for 5-10mins. I was searching for a help over the internet but got nothing then shaking the trimmer worked well water came out from the trimmer and it stopped. The power on/off switch is working perfectly now.
thank you gerry bp. that works, and i agree, i have a wahl 9818L. experienced the exact issue. will not turn off after shaving with water. i removed the trianglular ON/OFF pad gently, ( if you remove on side and gently lift it up, you will not break the plastic clear switch away), then wipe the inside with a q-tip. press the on/off switch with a firm pointed object. it should turn off and then repeat for on.
i didn’t want to seal the switch but, i might have to place a breathable water resistant cover over the switch to prevent this from re-occuring. oh, i meant over the top of - not under the switch.