#Person1#: Mr. Sellers? It's Steven speaking, your tenant. We've just suffered a power failure. What should I do now?
#Person2#: All right, Steven. Do you have a flashlight?
#Person1#: Yes, I do.
#Person2#: OK, now go down to the basement and find the circuit box. Open it and check if there are any fuses blown out.
#Person1#: How do I know if it's blown out?
#Person2#: You'll see it's black and has burnt smell.
#Person1#: Then what shall I do?
#Person2#: Unscrew the burnt fuses and replace them with the good ones. You can find them on the rack in the basement.
#Person1#: OK, I'll try. I'll call you again if that doesn't work.
a power failure