How to diagnose problem after charger shorting?

My Asus N56VZ charger shorted as i plugged it in and tripped the home circuit breaker.

The laptop was plugged in at the time. I bought a new charger and now the laptop will not start. I have tried the following tests so far.

With battery attached and charger plugged in i get the red battery light. When i press power button it starts booting and after about 10 seconds it stops and goes dead.

With battery removed and charger plugged i get no lights and nothing happens when i press the power button.

I have opened the laptop and found i get 19V into the power socket, 19v after the connectors all the way to where it plugs into the main board. That is all i know to test. Just tested to confirm the power supply socket is ok.

What should i check next? How do i test the main board?

Any help would be appreciated!

Thank you

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