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ultrastudio 4k Blackmagicdesign no display

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    ultrastudio 4k Blackmagicdesign no display

    i have the above device which had a problem with power supply and was fixed.
    Because i do not have thunderbolt device i connected HDMI out to the system and turn on. the display has light, buttons seems to be functional, but i do not have output.
    all voltages designated on board appear except VCC3V3_LC, PM_DPO_EN, VCC3V3_DPO,VCC1V2_DPO.
    when i connected hdmi to monitor and i boot system it send signal to monitor and then sleep node.

    can someone help!

    Thanks
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