Home Theater Connection Fix

I'm seeking an expert to resolve connectivity issues in my home theater system. Currently, my TV and receiver, as well as my streaming device or game console, are having trouble connecting or switching. When I attempt to switch between devices, the TV displays a “No Signal” message.

Ideal Skills and Experience:
- Experience with home theater systems
- Expertise in troubleshooting TV and receiver connections
- Familiarity with streaming devices and game consoles
- Ability to diagnose and fix “No Signal” issues

Please provide a detailed plan and your relevant experience.