I've been following this thread for a while now and while I see some have suggested this, I didnt see where anyone had tried it.
Yesterday I had my first atomizer die, a 401 (pilot hybrid). I've been waiting for one of their atomizers to die before trying something as I didnt think the coke thing was helping much and the idea of putting ice machine cleaner in an atomizer wasn't very appealing (though it may work quite well).
First, I suspect the 401 atomizer is permanently dead, its cold and I suspect the wire is broken. Having spares for both the Npro and the 401 I decided to give it go and put baking soda inside each atomizer (as best I could and then immerse them in a shot glass of White vinegar.
First, the atomizer from the nPro I removed this morning. Rinsed with hot water from the tap, and added a few drops. It is working great, much improved, looking down into it, I can even see the coil/wire inside (I never could before, I used the nPro for about two weeks before reading this thread) prior to this all I could see was a black spot.
The 401 is still soaking, I will take it out later, dry it and give it a try, I suspect it will fail because I suspect the wire is broken, in which case I will attempt to dismantle it to see the results of the soaking. Any advice on how to dismantle it for better viewing would be appreciated.
Also, there is now a great deal of black/gray particulate floating in the vinegar.