I have become the owner of a Soundtech PC-1250 Powered Mixing Board, and I am interested in making something more than a boat anchor of it. When I obtained the unit I was told the building it was in had suffered a lightning strike, and it hadn't worked since. I took it home to find out what I could and I am stumped as to how to proceed. When it powers up, it emits a constant midrange squeal that is very loud out of all four outputs: R, L, Mon. A, Mon. B.
If it were silent I know a thing or two to try. I don't own a scope. Can someone please help me to isolate the origin of this signal so I can proceed?
If it were silent I know a thing or two to try. I don't own a scope. Can someone please help me to isolate the origin of this signal so I can proceed?