How dangerous is to work with the motherboard while battery is still connected | A severe Damage !

[@Strino78]

Excellent diagnostic analysis. It really reinforces that you should always remove ac and battery power before doing any service or repairs.

[@nikeshdhakal4197]

Nice case study❤❤.

[@musapetro344]

Nice and deep explanation sir!

[@musapetro344]

You are the best sir! I recommend technician to subscribe to this channel as they will learn alot

[@santhirakumarmekatheepan2459]

Super Anna good study for the video 👍❤️

[@akwasiopoku3189]

I bet the ec is also dead if it got fed 19v too. poor engineering design on the part of the manufacturer.

[@philitroniks]

@@akwasiopoku3189 Nice catch. I guessed it first when I saw low ohms on 3.3v rail that EC would have been shorted. But after isolating 3.3v_alw line which is going to 1.8V_PRIM regulator, after, I got high impedence on 3.3v_alw. Still the EC chip is connected to 3.3V_alw. Based on that I guessed the EC chip is ok. The supply pins on the EC chip was reading high Kilo ohms. But to know the full working condition of the EC we need to prepare the board and check it. Because sometimes even supply pins hav high impedence EC chip would have been gone dead, although we will have 3.3v on all supply pins. If we check reset signal in the EC chip there won't be a reset. I guess once 1.8V rail is shorted low impedence from SoC is sent all the way from SoC to 19v rail, which the charger IC would have detected short and cut down 19v from main power rail. Which might have protected EC. Would it be like that?