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I'm assuming mobo is fried. If I input power into the ordinary port or into TB3 port it just doesn't charge nor show any signs of it being alive. The battery LED indicator is also dead. Power button doesn't work.
In case I replace the mobo the device will work again? No additional parts required like grabbing a new charger and stuff like that?
Is this a good question?
Rep: 449.5k
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Hi @krpwa
It may not be a fried motherboard. It could be something as simple as a faulty charger or charger cable or a faulty DC-In jack (example only to show part)
If you have a DMM (digital multimeter) use it to verify that there is 19.5VDC at the DC output plug of the charger. If you haven't got a DMM try connecting a compatible, known working charger and see if the laptop responds to it i.e. laptop's battery charge light turns on.
If your charger tests OK you will need a DMM to verify whether the DC-In jack is OK or not.
What sometimes can happen is that the centre +ve connector of the jack breaks internally, and this opens the power path between the charger and the motherboard, This means that the charger cannot power the motherboard or charge the battery.
Here's the service manual for the laptop that will help.
Go to p.70 to view the procedure to remove the power adapter port (aka DC-In jack).
Initially you don't have to remove the jack, just dis-assemble the laptop to a point where you can access the DC-In jack cable plug that is connected to the motherboard and disconnect it from the motherboard. Then connect the charger to the laptop in the normal way and use the DMM to check if you measure 19.5V DC when the meter is connected to the now disconnected jack cable plug's red and black wires.
If there isn't 19.5V DC on the red and black wires then the jack will have to be replaced as it cannot be repaired. Search online for 0P7G3 to find suppliers that suit you best.
If there is 19.5V DC on the red and black wires then there's a problem on the motherboard and further testing using the schematics¹ would be required to find out what the problem is (¹ I couldn't find a free download for the schematics. You may have better luck)
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