Resolved almost immediately after I made this thread. It ended up being a simple fix. See next post and get a laugh.
My headphones quit working on me today. As you can see in the playback device image below I should be getting a signal in the headphones but they are silent, online and offline.
I tried restarting the system a couple of times but that has not resolved the issue. I unplugged the USB cable and plugged it back in using another USB port to see if that was the problem. I also tried a set of desktop Altec Lansing ACS5 Multimedia speakers that use the old style jacks and they do not work either. (Had them since I bought my Gateway 2000 system in the early 1990’s.) I did not just pull them off a shelf, I used them just last week on this system. They also show the green status bar moving up and down when I choose them as the default.
What I want to know is where else I can look to find the problem and hopefully resolve it?