SB2 Display died after power loss

I needed to isolate the ring main this morning, so threw the mains switch for ring main. When I had finished work my old SB2 didn't work. Looking at it, there was obviously power (Optical out lit up) and after waiting a while it was recognized by LMS.

So it looks like the display has died somehow - anyone had this before? Any ideas?

Obviously it still send music out, and I mainly control what I play via the PC, but I am worried that at some point it will power up and not find an IP address - which has happened, and I lack the ability to go through the screen menus.

Any help to keep my much loved SB2 going would be appreciated. Many thanks

Eserim

PS - the IR Receiver, which is in the display board, is still OK, so board must still be powered.