Thanks reg - I thought it was. I recognize the capacitor.
#1 if it's a hum the check the cap as advised before, it will bw either the back wall of the machine, near the water valve, or mounted to the motor.
#2 opening it up isn't gonna hurt anything, and you've gotta do it to check the cap anyway.
I meant continuing to use the machine, not opening up the cabinet. Sorry about the confusion.