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    #1

    Motherboard question ?

    Trying to fix junked MicroStar - MS-6312.

    Symptoms: / Problems / and questions.
    * Will never turn on with the power switch...
    * Let it sit for a minute,and it will come on by itself.
    * Gets to "cmos setting wrong" press F1 or F10 etc. cause bios was reset.
    CAN not press anything cause the USB keyboard does not work! Although it Does detect the mouse.
    * Then it shuts itself off.... with a few power light glitches...

    Is it only the capacitors or the power supply?
    I see two capacitors that are bad looking.
    "swoll up on top a bit" and a spec of the brown stuff on top.

    In the top pic at the post below.
    https://www.badcaps.net/forum/viewtopic.php?t=129
    The two green ones at the top right are the ones that are bad.
    Everything else looks ok.. although it looks like the power supply has been hot before...thats' what I was thinking that was wrong with it But It never got hot while it was on. But then I noticed that the two bad capacitors got really hot right before it shut off...

    So, if I replace those two capacitors and it fixes it....
    HOW am I even going to press F1 or F10 to reset the bios back up when the USB keyboard don't work?     and of course this model of motherboard doesn't have a PS2 port. Has nothing but usb ports. and it only detects the mouse,which I can't click F1 with. lol What do I do?
    I see an empty plugup hole with com1 on it.. maybe install a serial port and use a serial keyboard?

    Thanks for any suggetions...
    Tags: None
    #2
    make sure that triple usb jack isnt busted.
    remember bad caps can cause all sorts of odd symptoms.
    if they are bulging they are bad.,

    Comment

      #3
      Agreed.

      Use the USB port closest to the actual PCB for a keyboard, that worked for me on the many of these I've repaired.

      As KC8 mentioned, any swollen caps are bad and will cause probs.
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        #4
        Hey.. thanks for replying..

        Topcat. I tried every usb port. But maybe the caps are causing that to?
        I'll check radioshack or somewhere tomorrow. I done checked all my junked electronics around the house.. and none had the cap size I needed. 1500uf 10v. I was hoping something else had the part in it I needed. hee hee..

        kc8adu. The usb ports look ok. It does detect the mouse,but not the keyboard. I seen that when I moved the cmos jumper to "clear". of course even then I still couldn't click nothing. lol

        This is the first gateway I tried to fix. And I was supprised not to see no PS2 ports.. I was like.. "WHAT!" how crappy... lol

        IS there any way that I can check the power supply on that model without the motherboard connected?
        Its the 90watt NPS-145PB Newton power ltd.
        There is a green wire,but I didn't get it to do nothing by jumping it....

        And yep, those two caps are posted here as being bad cap manufacturers. " CHHSI" . They prolly should say "Cheezy" lol..

        Thanks for the help folks.

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