Mobo failure?

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  1. Posts : 50,642
    Thread Starter
       #11

    Found the 9 pin for the front USB ports which never worked. The one for the back is under aluminum housing I'd have to tear off. How do I use a multi-meter to test this exactly? I see no nearby ground.
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  2. Posts : 21,004
    Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
       #12

    Any of the mobo fixing screws Greg they usually have a small circle of solder around them also - the pop rivet ends in the case sometimes have the bare metal showing but the screws are the best cos they ground the mobo to the case which is grounded via the PSU earth connection .

    Usually it is one to the two pins at the opposite end to the blank.

    You can test for ground between the ground pin and the screw and then the power using the screws for the ground to test that opposite pin (usually next to the ground pin) to see if there is power there - be careful to touch one at a time and not connect any two with the same probe:)
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  3. Posts : 50,642
    Thread Starter
       #13

    No power to those USB pins.
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  4. Posts : 21,004
    Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
       #14

    gregrocker said:
    No power to those USB pins.
    Think Steve must have got it right mate the thing is cactus

    Sorry mate if I were a little closer you could have a spare or two:)
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  5. Posts : 50,642
    Thread Starter
       #15

    It's OK Gary I had it taken off the E-recycle run so I could play with it some. Learned a little more.

    Thanks to all. Wish I could rep you but you are such regulars for good hardware help I gotta pass more around.
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  6. Posts : 21,004
    Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
       #16

    gregrocker said:
    It's OK Gary I had it taken off the E-recycle run so I could play with it some. Learned a little more.

    Thanks to all. Wish I could rep you but you are such regulars for good hardware help I gotta pass more around.
    Yes Greg it is a shame you blokes cannot get access to old recyclers cos I have picked up quite a few that have really good hardware in them like the really nice 550 watt Coolermaster I stuck in the tester I told you about. I have also made up some good machines for those who cannot afford it from recycled stuff - I think the waste is criminal.

    Now back to my recycled PSU for a bench tester woo hoo!

    John
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