Hardware (iSG Box)

No HDMI Output

If your iSG Box SE does not display anything via HDMI, please follow the steps below to identify and resolve the issue.

1. Verify the TV’s HDMI Input Source

If you are connecting iSG Box SE to a TV, please note that most TVs have multiple HDMI input ports.

  • Make sure the HDMI cable is connected firmly on both ends.

  • On your TV, use the Input / Source button to check that the selected HDMI input matches the port where the iSG Box SE is connected.

⚠️ An incorrect HDMI input selection is the most common reason for no display.

2. Power Cycle the iSG Box SE

  • Disconnect the power adapter from the iSG Box SE.

  • Wait 10–15 seconds.

  • Reconnect the power adapter and observe whether the HDMI output appears during boot.

This step helps recover from temporary startup or HDMI handshake issues.

3. Check the Front Status LED Indicator

Please observe the LED indicator on the front of the iSG Box SE:

  • Red LED: The device is in standby mode

    • Press the Power button on the remote control

    • The LED should turn blue, indicating the device is active

  • Blue LED: The device is powered on and should output HDMI video

If the LED remains red, HDMI output will not be active.

4. Try a Different HDMI Cable

HDMI cables can fail or be incompatible.

  • Replace the HDMI cable with another known-working one

  • Avoid using very long cables or adapters if possible

Still Not Working?

If HDMI output is still unavailable after completing all steps above, please contact LinknLink Support and provide a short video showing the issue.

We will assist you further as soon as possible.

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