OP
Silly Sausage
As others have said, it's the cable insulation breaking down.
Had one at home many years ago, occasional load bangs & blown fuse.
Eventually there was an almighty loud bang, saw the flash through the gaps in floorboards, circuit fuse intact, suppliers fuse blown. Cable totally destroyed!
This was just a cable clipped to the underside of the ground floor joists.
Probably time to get an electrician in, unless of course you're capable yourself.
Had one at home many years ago, occasional load bangs & blown fuse.
Eventually there was an almighty loud bang, saw the flash through the gaps in floorboards, circuit fuse intact, suppliers fuse blown. Cable totally destroyed!
This was just a cable clipped to the underside of the ground floor joists.
Probably time to get an electrician in, unless of course you're capable yourself.