MKIIB EQ hum?

[Jamme1961]

just noticed, when I engage the EQ on my amp- it hums? EQ off no noise. Ive replaced all filter caps but, there are some caps on the EQ board, on the side of the chassis - which I haven't replaced yet- could this be the problem? have parts on order just waiting for delivery thanks for any info.

 

[Jamme1961]

update for future MIIB people - changed the caps on EQ board hum is gone