Hiya,

OK voltages are the same as above tested on TP's on PSU.  AC checked out the same as well on the +/-12 & +5v.

After looking at schematics all day, I also replaced all 470uf 25v caps on sound board.

Fired her up, same.

The problem is the more I try to fix it, the more annoying this noise is getting.  I am now completely out of ideas. So unless its dirty power coming from the PSU I'm stumped.