Charging port repair for this machine was a simple job. It is loose due to vibration and wear and tear. Fluxing quick, heating up, then soldering makes it a perfect joint. We are the motherboard repair experts, any motherboard any problem. Even nail salon equipment. F' it! Quickly soldered the charging port, standandard 12V type connection. This device uses the charger to charge a battery so you can do nails on the spot.