ground problem with an electric guitar
Any suggestions on how to deal with a ground problem for an electric guitar in a recording made circa 1968?
The recording quality is very good, but it sounds like one of the guitars wasn't grounded properly. There's an irritating buzz sound throughout, and sometimes it buzzes in time to one of the guitars. (sounds like the buzz goes out when a finger hits a string).
I've tried a lot of things but nothing seems able to deal with it, so any suggestions will be appreciated.
I didn't find the right solution from the Internet.