1. Be sure to plug in the USB connector at the back of your TV first to power up the built-in Marseille processor.
  2. Double-check that the connector labeled “TV” and the connector labeled “Source” are plugged in correctly (“TV” to TV and “Source” to source device).
  3. Make sure that the TV is set to display video from the HDMI input where you connected mCable (usually controlled by a button labeled ‘source’ or ‘input’ on your TV’s remote).
  4. If this still does not work, try power from a different USB port or from a separate AC-to-USB power adapter (e.g. iPhone charger).

If the problem persists after these steps, please submit a support ticket.