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  • NO video signal

    From SBIANCO@3:633/10 to All on Monday, November 17, 2025 15:26:47
    My PC has got no video signal on its 3 ports:
    DP1, DP2, HDMI. I tried an adapter USB/HDMI, too: no success.
    Any solution? https://www.amazon.it/photos/share/wlvL8PYndRoxujzv7WFD5UP710DOL7F2Ln68HQgMMMl

    --- PyGate Linux v1.5
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From Paul@3:633/10 to All on Monday, November 17, 2025 14:48:38
    On Mon, 11/17/2025 9:26 AM, SBIANCO wrote:
    My PC has got no video signal on its 3 ports:
    DP1, DP2, HDMI. I tried an adapter USB/HDMI, too: no success.
    Any solution? https://www.amazon.it/photos/share/wlvL8PYndRoxujzv7WFD5UP710DOL7F2Ln68HQgMMMl

    We know it is an 8GB industrial mini-PC from

    https://hystou.com/

    but not which model. I was unable to determine a "match" to some
    of the connector layout on the left of the picture.

    DC IN1 appears to be a barrel power connector.
    PWR4P1 appears to be an ATX 12V 2x2 connector.

    The FP1 front panel connector is not hooked up.

    Check for cable assemblies trapped in there somewhere.

    Also, check box contents for "sub-assemblies"
    yet to be put into place.

    The wall adapter could be a 12VDC unit.

    I suspect there is a powering problem of some sort.
    Does it have a fan ? Does the fan spin ?

    Paul

    --- PyGate Linux v1.5
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From SBIANCO@3:633/10 to All on Tuesday, November 18, 2025 07:31:44
    Il 17/11/2025 20:48, Paul ha scritto:

    Does it have a fan ? Does the fan spin ?

    Paul

    No fan (fanless pc).
    Thank You very very much for Your detailed analyses.



    --- PyGate Linux v1.5
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From SBIANCO@3:633/10 to All on Tuesday, November 18, 2025 07:35:30
    Il 17/11/2025 20:48, Paul ha scritto:


    We know it is an 8GB industrial mini-PC from

    https://hystou.com/
    I think it is that: https://hystou.com/product/hystou-h4-industrial-fanless-mini-pc-6-com-triple-display/




    --- PyGate Linux v1.5
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From Paul@3:633/10 to All on Tuesday, November 18, 2025 09:34:36
    On Tue, 11/18/2025 1:35 AM, SBIANCO wrote:
    Il 17/11/2025 20:48, Paul ha scritto:


    We know it is an 8GB industrial mini-PC from

    https://hystou.com/
    I think it is that: https://hystou.com/product/hystou-h4-industrial-fanless-mini-pc-6-com-triple-display/




    I cannot find a user manual or hardware manual on the site.
    This is one of the first "must have" items before purchase.
    If a manufacturer offers no PDF, I do not buy.

    *******

    I would verify the 12V @ 5A adapter is working correctly first.

    With the cover off the box, as you have done, take your multimeter
    to the 2x2 ATX 12V, as you can monitor whether 12V power is present,
    using the pins within the 2x2 connector (while the adapter is
    connected to the barrel power input).

    https://minis-pc.com/blog/hystou-h4-fanless-industrial-mini-itx-intel-core-i5-8250u-i7-8550u-intel-uhd-graphics-620/

    # A kind of bottom view of the box.

    https://minis-pc.com/wp-content/uploads/2021/11/Histou-H4-Intel-Core-i7-8550U-and-i5-8250U-Industrial-Mini-ITX-14.jpg

    Power Adapter 12V Power Input, supply 12V 5A power adapter within the package Auto Power On Support Auto Power On Function

    So the missing connection to the FP connector does not matter,
    as it powers up when +12V @ 5A is present. The "SW" appears to be
    a "blank" or hole-filler.

    There would seem to be no thermal tape for the unit. Heat travels through
    the air inside the casing, to the Aluminum chassis fins.

    The monitor output should be on the HDMI connector. Connect a 1920x1080
    monitor with HDMI input to that connector, apply power to the unit, and
    see if you can enter the BIOS.

    Paul

    --- PyGate Linux v1.5
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From SBIANCO@3:633/10 to All on Tuesday, November 18, 2025 21:51:25
    Il 18/11/2025 15:34, Paul ha scritto:


    I cannot find a user manual or hardware manual on the site.

    The monitor output should be on the HDMI connector. Connect a 1920x1080 monitor with HDMI input to that connector, apply power to the unit, and
    see if you can enter the BIOS.

    Paul

    I'll try.
    Thank You very very much!



    --- PyGate Linux v1.5
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)