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印刷电路板出故障,往往是因焊接质量不好引起的。加工过程中进行的电气检测,只能查出质量非常不好的焊接。经过数次装调和遭受机械或热冲击之后,在用户处安装电路板时还会发现有的地方焊接不完善或折
Printed circuit board failure, often caused by poor welding quality. Electrical testing during the process can only detect very poor quality welding. After several loading adjustments and mechanical or thermal shocks, the circuit board at the customer’s location may also find somewhere the solder is not perfect or folded