Hi,
I recently got a notebook with the same problem. Thanks to your post, I got on the right track on fixing this. The pins you marked shouldn’t be grounded. Therefore, there had to be a short circuit somewhere. According to the schematics there should be the chargers voltage of 19V.
So I soldered a wire on these pins and connected my lab power supply. After feeding a current of 3A, I finally found a place which got hot. As it seems, the capacitors PC736 and PC734 were shorted. After removing them, the short was gone, the charger didn’t turn off again and the power LED on the board now flashes once every time I connect the charger.
I just ordered replacement 22uF 0805 25V capacitors. I’ll keep you posted.
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