Tattoo stencil Maschine repair and clean. printing lines. Chinese Maschine

Many people have got those simple Chinese tattoo thermo printer stencil machines.
At some point it starts printing lines that shouldn’t be there.
The reason is usually dirt in the scanner unit or thermo print unit.
In this video is example of how I clean it using a paper towel and some alcohol and maybe a little wooden stick with paper on it to accesses the hard to reach area.
It’s on your own risk :) always unplug from electricity first !