PROCHOT EXT problem after charger repair

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  • adelfr2009
    Member
    • Aug 2025
    • 12
    • ALGERIA

    #1

    PROCHOT EXT problem after charger repair

    I have a charger IC similar to the one shown in this figure (ISL88739B). During a short-circuit repair, I had to replace the resistor marked PR13 with a 0 Ω jumper, because the original one was burned and I couldn’t find the schematic for my laptop to know its exact value.

    On my board, the current-sense resistor (shunt) is 0.005 Ω (not 0.010 Ω), and I noticed that this small resistor (PR13) is connected between CSIN and the shunt output, forming part of the current-sense network.

    Could using 0 Ω instead of the original value (probably around 2 Ω) affect the charger operation or cause PROCHOT / over-current issues?
    Because after the repair, my laptop suffers from a constant PROCHOT EXT condition (CPU locked at low speed).

    Laptop : HP victus 15 fb
    Motherboard : dag3prmb8d0
    Attached Files

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  • adelfr2009
    Member
    • Aug 2025
    • 12
    • ALGERIA

    #2
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