Church PA System Repair

Our church PA system is currently not working. The amplifier and volume control panel are not connecting, resulting in no sound at all.

Key Issues:
- Amplifier Model: Sennheiser
- Primary Issue: No sound at all
- Possible Cause: Some connections may be loose

Ideal Skills and Experience:
- Experience with PA systems, particularly Sennheiser equipment
- Knowledge in troubleshooting and repairing audio equipment
- Ability to identify and secure loose connections

Looking for a reliable technician to diagnose and fix the issue. Please provide a brief overview of your relevant experience and approach.