Custom printed circuit boards short circuit is the most common problem, there are generally two cases of short circuit, one is PCB circuit board has reached a certain service life. The second case is the PCB circuit board production inspection is not in place.

A short circuit was found. Take a plate to cut (especially for single / double plate), after the secant, each part of the function block respectively power, part of a part of the exclusion.

The inspection work of high quality PCB should not be neglected, and every step should be inspected and handled carefully. This will reduce rework rate and scrap rate and avoid unnecessary losses.