Due to the bug of Graphics card, there might be no display on some TV sets.
In such cases, we suggest you:
a. Before powering up the Mini PC, connect Mini PC and your TV with HDMI cable firstly, then power on Mini PC.
b. Use VGA cable to connect with your TV or monitor, and use Audio jack to connect with your amplifier.
c. Use an HDMI to AV converter, then connect the composite port of your TV.