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    #1

    Abit BE6-II motherboard

    Greetings,

    I have an Abit BE6-II motherboard that posts sporadically with the bare minimum components installed - CPU, RAM, PSU, and a Keyboard. I know it posts when the speaker beeps. Re-seating the components has no effect.

    I thought the sporadic posting might be capacitor related. Upon inspection, non of the caps are bulged or leaking and they are all original. So, I pulled them ALL. While the ESR is OK, over half of them are leaking current between 1 and 2 mA. The biggest offenders are way out of spec, like a 1500uf / 6.3V measuring 2600uF and many of the 820uF caps are measuring 1500uF.

    Now, while I have ordered replacements, I am concerned that the posting behavior might be the north or south bridge BGA solder joints. I really hope to save this motherboard, but alas I am not equipped to re-flow BGA chips.

    My question to you folks is this: Do you think the leaky caps are responsible?

    I've replaced bulged / electrolytic leaking caps, and caps with ultra high ESR with good success. But I've never encountered caps that are only leaky (current) or out of spec. If the equipment is working, I'm not pulling it apart to check the caps :-)

    I've only got $20 invested in new parts, so, not the end of the world if it doesn't work. But, dang, vintage motherboards command a premium these days!

    Thanks!
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    #2
    Most certainly the caps, even more so if they have spewed (as far as I can tell some did.).

    Have had a BE6-II with similar issues when I got it and a full polymer recap fixed it (as it did for at least a bunch of other mainboards.).

    Even recently, had a VL6 almost not POST at all or sporadically. Replaced everything and found out some of the 2200uF Jackcons spewed over the MB. Cleaned up and replaced them with 1800uF Rubycon MCZ off a MSI mainboard.
    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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      #3
      Originally posted by Dan81 View Post
      Most certainly the caps, even more so if they have spewed (as far as I can tell some did.).

      Have had a BE6-II with similar issues when I got it and a full polymer recap fixed it (as it did for at least a bunch of other mainboards.).

      Even recently, had a VL6 almost not POST at all or sporadically. Replaced everything and found out some of the 2200uF Jackcons spewed over the MB. Cleaned up and replaced them with 1800uF Rubycon MCZ off a MSI mainboard.
      I realized after I posted that some of the board indeed had leaking electrolyte on it! I was so fixated on the caps, I didn't notice. Also, the bottoms of the caps looked clean. I don't know when it leaked, but that crud was really cemented on there. Luckily, no damage to the traces from what I can tell.

      Well, new caps in a few days, so we'll see!

      I feel more positive towards the repair now for sure.

      Comment

        #4
        Update:

        New caps fixed the posting issues. I went with some quality Panasonics - FR and FS series.

        From what I can tell, the board appears to be fully functional.

        Sweet!

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