Microwave oven - FAULTY (Moortown LS17)

DeLonghi microwave oven - this is working intermittently only so I am offering it as FAULTY. It alternates between apparently normal operation and very loud humming during which it doesn't heat anything. The internet suggests this could be a fault with the magnetron, but I'm giving it away in case there is someone out there who can fix it!

This is 8-10 years old, 900W power. Comes with its original box and manual.

For collection at your convenience from Chapel Allerton.