Anyone who suggested the problem was bad contacts (Tom etc.) was correct!
I did clean the contacts but one of the finger contacts in the CH2 AC/GND/DC switch was not making good contact. I ever so slightly bent it back and my traces are back to normal.
I guess my 2nd preamp board has the same problem, I thought it was fully working... At least I know how to fix it.
Anyways I want to offer a kind THANK YOU for those who took the time to help and sent me back to look for the problem again.
Timothy