Acorp 6VIA81P no post

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  • angel35
    Member
    • May 2020
    • 18
    • Hungary
    #1

    Acorp 6VIA81P no post

    Hello I have an old Motherboard

    Type: Acorp 6VIA81P Ver. 1.6

    It is works...and slowly died... freezing 1-2 times...and after that not windows starting...now totally not booting
    PCI post card 7 segment --,-- (1 times appear 06,05 but never more)
    Leds: IRDY, Frame, Reset not flash

    So looks like it is hardware fault..
    I checked some voltage, but looks like good at FETs
    Capacitors ok, not damaged (but not checked the values)

    SD ram 256MB tested in other board ok
    Pentium2 400 slot1 tested ok

    CPU hot
    Memory (board upside hot, AGP side cold)
    Nortbridge slowly warm
    Southbridge cold or very slow warm
    South FAN connector RPM sensing voltage is 0 (other FAN conn RPM sensing 5V) Q14 (2Ay) changed, because it was shorted burnt.

    So i request help what should be check.
    Tags: None
    • Dan81
      SNES-powered
      • Oct 2013
      • 1866
      • Romania
      #2
      Re: Acorp 6VIA81P no post

      There's something that's decaying to the point where it goes dead... I have a 6VIA81P as well (not sure what revision it is at the moment, have to check) on which the same issue happens - no POST most of the times, constant restart cycle that prevents it from POST-ing, and keyboard won't work at all.
      Main rig:
      Gigabyte B75M-D3H
      Core i5-3470 3.60GHz
      Gigabyte Geforce GTX650 1GB GDDR5
      16GB DDR3-1600
      Samsung SH-224AB DVD-RW
      FSP Bluestorm II 500W (recapped)
      120GB ADATA + 2x Seagate Barracuda ES.2 ST31000340NS 1TB
      Delux MG760 case

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