DeLonghi RT400 Retro 4-Slice Toaster "magnet wont hold" Questions

...wont stay down .Is there someone in norht london who can repair? I know this problem. There is a small electromagnet at the base that holds the pop-up mechanism down when a steel plate latches on the ...

...Usually these machines have either a solenoid activated lever that holds the toast down, although magnetic systems are not uncommon. These may be avtivated by a thermostat, an optical "brownness" ...