PCB boards are susceptible to a range of issues when exposed to a humid environment. Common problems include short circuits and open circuits in the circuit board signals. Therefore, it is crucial to determine if a PCB board is wet. In a humid environment, where the air contains high moisture content, water droplets can form and fall onto the PCB board. These water droplets tend to get absorbed by the pins of electronic components or printed lines on the circuit board. Over time, the moisture can lead to mold and breakage, especially in smaller signal transmission lines. This ultimately causes the circuit board to malfunction when put back into operation.
The main reasons for circuit board failure due to humidity are as follows:
- Changes in the circuit parameters of the PCB board.
- Short circuits occurring within the PCB board circuit.
- Breakage in the signal processing or transmission lines on the PCB board.
