Musical Fidelity A2 integrated Amp

[Mark]

I have a Musical Fidelity Amp (A2 - Class A) and it has developed a
hum, low level and constant in volume indicating it is in the output
stage. I have had the Caps replaced but the hum still occurs. Any
ideas?

Regards

Mark

 

[Luddite]

I have a Musical Fidelity Amp (A2 - Class A) and it has developed a
hum, low level and constant in volume indicating it is in the output
stage. I have had the Caps replaced but the hum still occurs. Any
ideas?

is it a 60hz or 120hz?