2025-05-25
Fire destruction?! The real culprit behind PCB corrosion-induced short circuits is actually this?
A certain model of thermal printer suddenly burned out while in standby mode, with the ignition point located in the internal mainboard area. After replacing the unit with a new one, functionality was restored, but the cause of failure must be identified. Inspection samples included the burned-out unit, a functional unit, and the mainboard. Through systematic analysis, the root cause of the failure was ultimately identified as a corrosive short circuit triggered by Cl elements. Below are the key analysis steps and conclusions.
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