How can I troubleshoot A/C compressor issues in Audi 80?

My Audi 80's A/C has stopped working and I suspect it may be due to a compressor issue. How can I diagnose and fix this problem?

The first step in troubleshooting A/C compressor problems is to check the A/C relay and fuse. These are common culprits for A/C issues and can easily be replaced if faulty.

It's also important to check the compressor itself for any visual signs of damage or wear. This could include leaks, broken or loose components, or excessive debris on the exterior.