Maintenance of Lenovo ThinkPad X1 notebook cooler no booting

Maintenance of Lenovo ThinkPad X1 notebook cooler no booting

Lenovo ThinkPad X1 laptop does not turn on when it is cold. When encountering Lenovo x1, it is not necessarily the CPU that causes this problem. It may be caused by the faulty soldering of the crystal oscillator. The machine is currently in normal use, and the fault is repaired.

Machine model: Lenovo ThinkPad x1

Plate No.: nm-c661 rev1.0

Fault phenomenon: computer cooler no booting

Maintenance process: the machine is disassembled by hand. After Repeat welding EC BGA Rework Station package, it can be started up. After several times of startup, it is thought that it is normal, but it is found that Won’t Turn On is again started.

Maintenance Figure 1 of Lenovo ThinkPad X1 notebook refrigerator no booting

After the CPU Repeat welding is turned on again after the cold machine, when it is about to give up, cleaning the motherboard with a brush Flux can actually brush off the Crystal next to the CPU.After Crystal was reset to welding, the refrigerator was started up several times, and everything was normal.

Maintenance Figure 2 of Lenovo ThinkPad X1 notebook refrigerator no booting

Therefore, sometimes encounter Lenovo X1 machine is not necessarily caused by the CPU, it may be caused by Crystal Inveracious Soldering, the machine is currently in normal use, troubleshooting!

Maintenance Figure 3 of Lenovo ThinkPad X1 notebook refrigerator no booting