Lenovo Thinkpad E14 Laptop Motherboard Repair - No Power Fault

In this important video, we repaired the motherboard of the Lenovo Thinkpad E14 laptop
The motherboard model of this laptop is nm-c421
The problem with this laptop is that it does not work at all!
First, we connected the type c port tester and noticed from the apparent readings that the voltage amplification process did not occur and the input voltage remained at 5 volts!
Before starting the repair process, we attached illustrative (anatomical) images that include the most important circuits and the ideal resistance values ​​for these circuits
After that, we proved the integrity of the board circuits and their components by temporarily passing the PD ICL
We then moved to ensure the integrity of the port paths and they were all intact
In order to limit the fault, we analyzed the signals between the charger and the PD ICL to be able to, through the analysis process, reach the cause of the fault and work on repairing it successfully, as you will see in this video
We hope you enjoy and benefit from watching

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