Epox EP 85 MVP3C-M - 3.54v Vcore regardless of jumpers

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  • kotel studios
    Senior Member
    • Dec 2024
    • 137
    • Poland
    #1

    Epox EP 85 MVP3C-M - 3.54v Vcore regardless of jumpers

    Hi,

    Recently I got an Epox EP-85 MVP3C-M board from scrap. After fixing the broken caps I powered it on without CPU and the jumpers set to 60Mhz FSB and 2x multiplier.
    Sadly, Vcc3 was stuck at 3.54v regardless of jumpers. Vcc2 (Vi/o I think) was also the same voltage.
    So, I've returned to the original configuration I got the board in - 100Mhz FSB and 4x multiplier. Voltages haven't changed at all.
    What I've tried so far:
    replace the original N-MOSFETs with beefier 60V ones for testing
    Resolder the resistors near the Vcore Jumper block
    Short Vcore to GND by an 1k ohm resistor
    Reflow the schottky diode
    Try different FSB and multiplier settings
    But to no avail... The driver IC is an werid unbranded one too. It is
    AR7010
    M6822
    in SSOP8

    Any ideas what might be wrong?
    Last edited by kotel studios; 05-25-2025, 03:02 AM.
    Tags: None
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