No power on Lenovo 80jt laptop motherboard?

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Sergey Misyura2021-11-07 21:59:54

laptops

Sergey Misyura, 2021-11-07 21:59:54

Good day
I ask you for help
I have a problem with the Lenovo 80jt laptop board
The charging unit is whole, the socket is whole, there are 20 volts in the plug, the laptop works from the battery
When I insert the plug into the charging socket, I get 1 volt at the output
. What could be the problem?

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