Editing Printed circuit board (section)

== Repair ==
Manufacturers may not support component-level repair of printed circuit boards because of the relatively low cost to replace compared with the time and cost of troubleshooting to a component level. In board-level repair, the technician identifies the board (PCA) on which the fault resides and replaces it. This shift is economically efficient from a manufacturer's point of view but is also materially wasteful, as a circuit board with hundreds of functional components may be discarded and replaced due to the failure of one minor and inexpensive part, such as a resistor or capacitor, and this practice is a significant contributor to the problem of [[e-waste]].<ref>{{Cite book |last1=Brown |first1=Mark |last2=Rawtani |first2=Jawahar |last3=Patil |first3=Dinesh |title=Practical Troubleshooting of Electrical Equipment and Control Circuits |chapter=Appendix B - Troubleshooting |date=2004 |doi=10.1016/b978-075066278-9/50009-3 |pages=196–212 |publisher=Elsevier |isbn=978-0-7506-6278-9 }}</ref>