820-000923 Critical Update

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  • iMuhtaseb
    Senior Member
    • Jan 2017
    • 122
    • Palesine
    #1

    820-000923 Critical Update

    Hello,

    Hope you guys all doing good.

    This case has been a pickle for me.

    Issue: liquid was spilled around the U3200 area and mainly around U4200.

    Originally this computer came in for a no power issue; this case is pretty old I can't remember what I changed and it turned on successfully.

    Now after the computer POSTed successfully; it asks for the magical critical update.. I replaced some caps and resistors and round U4200 such as R4203, C4234, C4235.. they were looking shady.. I removed U4200 and reballed it, same issue..

    I ordered a right wing from AliExpress and extracted U4200, reballed and installed with the same issue..

    I have opened the schematics of this puppy (U4200, berkelium chip) but I cannot understand sh*t! *giggle*

    What else could it be?

    PP3V3_S4_SOC_PMU is 1.1v
    Tags: None
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