can anyone please tell me the date code after which both front and rear boards need changing when there is a fault with the rear board on an s20brsb21.
Hiya,
The date code is in the serial number.
11 is the factory, next two are the year, next two the week number.
From 110330 the electronics changed, so machines with that number and earlier require both boards (unless they’ve already been changed previously for newer boards).