A recent video on the Cheap & Cheerful YouTube channel drew attention to ultrasonic cleaning devices that are in fact simply vibrating motors inside, not ultrasonically agitating water for a true ultrasonic clean.
The video drew attention to thefake cleaners’ packaging, which is described as a “multifunction cleaner,” and is powered by two AAA batteries, while a genuine ultrasonic cleaner is made of metal and is AC-powered.
The fake cleaners’ vibration motors create a different, less effective water agitation, and the video advises that it is not suitable for PCB cleaning.
