Let us help you to troubleshoot the Roku Black Screen error. First, check all the video cables connected to the device and ensure that the connections are secure. Update your Roku device to the latest version. Also, try to restart your Roku device, Roku TV, and Router using appropriate reset settings. You can also replace the Roku device with a new one if Roku Black Screen errors remain even after troubleshooting. If you find it hard to fix the Roku Black Screen error on your own, please contact our customer support number +1-805-539-0300 or visit our blog https://www.gocomtechnicalsupport.com/troubleshooting-black-screen-issue-on-roku/