Hi, @Queen0701
Greetings, and welcome to the Roku Community.
We understand the problem you've encountered with your TCL Roku TV having a black screen or no picture while the sound is working, and we're sorry to hear about the trouble. Since this is a hardware-related concern, it might be best to reach out to your Roku TV manufacturer to address the issue. The Roku TV manufacturer provides direct support with their TV models using the Roku OS.
You can be guided in this support article: Where can I get support for my Roku TV™?
We hope this will be sorted out soon.
Best wishes,
Kash
Takashi O.
Roku Community Moderator