I bought the aroma diffuser about two weeks and since then about 10 times had in operation. The instrument sees through the grain very nice and worked well, but was then kapputt at once. I had the diffuser just the last switched times and half an hour later, the device made no sound more of themselves. The lamp is not more, though the power supply is plugged. I then removed the water and after that cleaned the tank, but this has not changed. I have the tank always filled with distilled water and added 2-3 drops of perfume oil and also what kept me cleaning As always adhere to the instructions. Very unfortunate that the device has so quickly given up the ghost