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Thread: This guy needs one or two of you serious expert types

  1. #1
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    Default This guy needs one or two of you serious expert types

    He claims, and the pic seems to support, that he has 20V AC in the chassis of his new build, detectable only when the power is disconnected from the wall.

    He further says it's coming from his Ethernet cable, but the other machine on his network does not have this issue and switching the cable made no difference?

    He swapped routers completely and the issue continued.

    If anyone has any insight, here is the thread:
    http://www.tomshardware.com/forum/27...-case#t1997704

    Or if you don't have an account over there I'll be happy to pass along any ideas.
    i7-2600K W/Apogee XT block, ASRock Z77 Extreme 4, G.Skill 2x4GB 1600, Powercolor 5870 W/EK full block, Seasonic X650, Intel 320 160GB, Caselabs M8

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    Default

    He switched routers, but did he switch the power adapter used for each router?

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    Default

    He said he did. Apparently, they both did the same thing. He says now that he has fixed it by using a grounded PSU to supply the router with 5V power.

    I don't understand why two ungrounded routers (and their respective wall warts) would do this, with one PC only, simply because they are ungrounded. Doesn't this suggest a more serious problem that the grounded 5V power source is just masking? I'm not sure I have ever seen a grounded router, actually. Now I'll have to go look.
    i7-2600K W/Apogee XT block, ASRock Z77 Extreme 4, G.Skill 2x4GB 1600, Powercolor 5870 W/EK full block, Seasonic X650, Intel 320 160GB, Caselabs M8

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    Well, the ethernet cable has current through it that has to be grounded, without grounding on the router's supply, it was grounding though the motherboard which grounds through the case, which grounds through the power supply. When the supply wasn't grounded, and you touched the case, they you were the ground.
    Quote Originally Posted by JFK
    The American, by nature, is optimistic. He is experimental, an inventor and a builder who builds best when called upon to build greatly

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    Default

    Yes, I have it that far I think.

    Still, it's not a normal situation. I guess there must be some incompatibility between the various equipment and routers. I think the pin-outs have changed over time to accommodate faster speeds, and someone made a mistake in design with the Ethernet ports on the board.
    i7-2600K W/Apogee XT block, ASRock Z77 Extreme 4, G.Skill 2x4GB 1600, Powercolor 5870 W/EK full block, Seasonic X650, Intel 320 160GB, Caselabs M8

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    Probably just a cheap router.
    Quote Originally Posted by JFK
    The American, by nature, is optimistic. He is experimental, an inventor and a builder who builds best when called upon to build greatly

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