Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
undefined
Thanks for the clarification! Indeed when having a closer look at an original PCB, the little mark is an "S", not a "+". I guess I got confused by looking at some pictures in a web search, which showed cloned PCBs.
Thank you for all the suggestions! And yes, I will add a thermal fuse as well.