Repair power supply for laptop

Here I will share my experience how I fixed power supply for my Sony laptop.

It happened one day without any reason, plug in my almost discharged laptop to power supply and connected it to the current socket. Instead for charging the battery I heard ticking sound, green indicator was off, and not sign of charging at all. And it happened in the worst possible moment when I was at my parents house in small city where delivery could take up to 3-5 days. All the shops in the town worked only by pre-order (I hate it so much). And my Linux server cannot wait until I connect it to view the logs.

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