When you troubleshoot issues with an MHL adapter, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
Video cables (if required)
To test your setup components, try the following:
Use the mobile device, display, and video cables in another setup to see if the problem is with the components or the setup.
Use a different mobile device, display, and video cables in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.
When you test your cables, it is recommended that you do the following:
Test each cable individually.
Use short cables when you are testing.
Note: You should avoid using adapters to further convert the HDMI signal. If you need to further convert the HDMI signal, make sure that all of the adapters and displays are compatible with the output resolution of the mobile device.
When you test your setup, make sure that the following is true:
Your mobile device is MHL compliant. For more information, navigate to the following FAQ: http://www.startech.com/faq/mhl_compliance.
The correct source is selected on your display.
The display is compatible with at least 1080p.