820-01521 Liquid Damage

thelaptoprepair

New member
I have received 820-01521 MacBook with liquid damage. It has no display or back light.
It's taking 20V and 400 milli amps. All voltages are present. DFU revive finished successfully.
Also tried another display and same result.
Noticed CPU is getting hot.
Voltage on L7230 and L7210 is 0.950 volts which is bit higher. As, I have compared these with working mother board.
 

2informaticos

Administrator
Staff member
Seems that board is stuck, not booting; just stays on.

Which areas have been affected by liquid spill?
Inspect audio board (both sides) and flex.

Test the board alone on the desk, nothing connected apart charger; just check CPU core voltage.
 
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