If your display won’t power on, don’t worry, these quick checks will help you get back up and running. This article is for anyone facing a device with no signs of life: no LED, no startup sound, and no display. If your device powers on but the screen stays black, check out:
By the end of the article: The device’s power LED should turn on or the display will show a startup logo. If not, you’ll know to make a support ticket at support.i3-connect.com.
Before you start
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Have a known-to-be-working power cable (Euro-Cable) available if possible.
Instructions
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Test the wall socket: Plug a different device (like a phone charger) into the same outlet to confirm it has power.
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Replace the display’s power cable with a known-good one. Ensure the connector is fully seated on both ends and any power switch on the display is set to On.
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Try a different outlet or power strip. Avoid daisy-chained extension cords.
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Remove accessories (USB devices) and retry. If the device briefly powers then cuts off, suspect a faulty cable or power supply.
If you see no power indications (no LED, no startup sound), document your outlet and cable tests before escalating to hardware service.
Troubleshooting
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If the device powers on but the screen stays black, see;
Connecting a laptop/device via USB-C or HDMI cable is not working; Black screen or no mirroring - Troubleshoot -
If the device powers on intermittently, check for loose connections or faulty power cables.
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If you’ve tried all steps and still have no power, make a ticket on support.i3-connect.com for hardware service.