$2 for 1-4 Layer PCBs, Get SMT Coupons: https://jlcpcb.com/DYE
Another Australian fan sent me two Switches for repair. One of the Switches was declared UNREPAIRABLE by the local repair shop. As a result, the cause of the failure was very surprising. I think the level of maintenance personnel in this shop needs to be improved.
The other one is the logo of the boot card caused by a typical wifi module failure. Replace the wifi module to kill~
The maintenance went well this time, and I have eaten meat again these few days~ Haha