Summary: As we all know, in winter and summer, air conditioners generally need heating and cooling almost every day, so long-term use will inevitably cause some minor problems. Many failures are caused by damaged air conditioner PCBs. So, what are the maintenance methods for common faults of air conditioner PCB? What are the precautions for air conditioning circuit board maintenance?

https://fs-technology.tumblr.com/post/685925329649500160/mark-point-design-in-pcb-production-fs-technology