Yes it hums on all functions and also with the volume turned all the way down. Would replacing those 2 caps above the power transformer be all that would need to be done to fix the hum or are there other parts that could contribute to it? They are both single section electrolitics the same size 1500 uf,35 volt. The new ones could be mounted under the chassis so it would still look stock. The timbre control is also the power switch for the amp. when the phono is on its switch powers the amp.
Thanks,John.