Tag Apple MacBook a1466 notebook

Before dismantling, there was no corrosion by visual inspection, and it was found that a fuse F7140 was 8.45V at one end and 4.1V at the other end, which jumped repeatedly.Drag a wire directly, and then power on it to trigger automatically. After repeated tests, it is normal.

Apple MacBook a1466 notebook can not find Nand, first measure the working conditions of Nand, remove 3.3V, open VCC, find one Parts motherboard, switch on Nand, and no auto power off. Troubleshooting and maintenance are over.