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Hello, I could really use some help or a schematic for a newer Lenovo LOQ board.
The laptop suffered liquid damage (Pepsi spill). It shorted out and physically blew a hole in the 3.3V step-down regulator. After some digging, I managed to identify the blown IC at position PUM1 as a Silergy SY8388ARHC (Top mark B3, QFN-16 2.5x2.5mm package).
Current Status (from the tech working on it):
He is measuring a dead short on the 3.3V rail (the one supplied by the blown IC).
He checked the 5V rail (which uses a similar IC nearby) and there is no short there.
He stated he doesn't want to just solder the new 3.3V chip and apply power for the sake of it, because with the current short, he is 100% sure it won't work and might cause more damage.
What I need:
Does anyone happen to have the schematics or boardview for the LA-N591P? The shop can't find it since it's a fairly new model.
From your experience with these newer Lenovo platforms, when the 3.3V regulator blows like this, what's the usual casualty? Does it usually just take out the KBC/Super I/O or a random ceramic cap, or does it usually go straight to the PCH/CPU and kill the board completely?
Any advice or files would be massively appreciated. Thanks in advance!
The laptop suffered liquid damage (Pepsi spill). It shorted out and physically blew a hole in the 3.3V step-down regulator. After some digging, I managed to identify the blown IC at position PUM1 as a Silergy SY8388ARHC (Top mark B3, QFN-16 2.5x2.5mm package).
Current Status (from the tech working on it):
He is measuring a dead short on the 3.3V rail (the one supplied by the blown IC).
He checked the 5V rail (which uses a similar IC nearby) and there is no short there.
He stated he doesn't want to just solder the new 3.3V chip and apply power for the sake of it, because with the current short, he is 100% sure it won't work and might cause more damage.
What I need:
Does anyone happen to have the schematics or boardview for the LA-N591P? The shop can't find it since it's a fairly new model.
From your experience with these newer Lenovo platforms, when the 3.3V regulator blows like this, what's the usual casualty? Does it usually just take out the KBC/Super I/O or a random ceramic cap, or does it usually go straight to the PCH/CPU and kill the board completely?
Any advice or files would be massively appreciated. Thanks in advance!
