Lint-free towels like microfiber cloths should be handy to massage and dry off your delicate circuit boards. Even with in depth use, this kind of cloth doesn’t shed debris, which might be counterproductive as your aim is to take away the unwanted materials from inside the affected units. In our testing, handheld brushes and swabs left the board trying dirtier than it began. They unfold partially solvated flux across the components which then dried, leaving a white residue.

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