So my 50hrtz is lost at ic5 I need to look at the 4580 datasheet. But I believe it's going in the ic and not out. So I do not have 50htrz at the resistors r150-r250.
All thanks to PaPaZbill, for this repair. I found that the ic5/ic6 on diode setting didn't pass the same voltage as the others so I switched them out and the amp is up and running. This amp baffled me, thanks for you knowledge it completely helped.