Buzzing sound relates to domestic fuse problem, or bigger issue?
Leakage in the breaker (it's not a fuse) It produces enough heat to start a fire. I found one one where the heat was so intense it broke the plastic covers on the stove and main brakers. The aluminum feeds were so hot the insulation had melted off of them.
I replaced the feeds with copper (screw that aluminum) and the two breakers, no problem. 
The breakers are available at Home Depot or Lowes. Turn off the main before swapping any breakers. The ones marked 200 are the mains. Be deliberate in what you do think before you do it.