Peavey XR600B loud hum

[Jam]

Peavey XR600B has loud buzz its not blowing fuses. The output I have 6.8 mv dc and 113.3 ac does that lead me to the caps? Thanks for any info

[52 Bill]

...does that lead me to the caps?

The first thing that I would check is broken solder joints on the main filter caps.