1. The chip has been confirmed to be damaged. Cut all stitches with diagonal pliers, and be careful not to hurt the pad. Then solder all pins with soldering iron, and use solder to penetrate the hole until the pad hole is transparent, and the disassembly is completed.

2, need to keep the chip. One method is to blow all pads evenly with a hot air gun until the solder melts and take out the chip. Or tin is stacked on all pads and the chip is removed. The key of these two methods is to master the temperature, which is also the most difficult to master. Once the temperature is over, the chip is finished.