How can I get a repair to the backlight?

I have had an Amstrad emailer plus model EM2001-UK since Dec 2002 and although it is used only as an address book and phone extension (since Anstrad ceased email services last year) the backlight has now gone out and the address book is no longer visible although I assume it's still retained in the system somewhere. How can I get the light back with the date, time, etc and all my addresses? I'm a bit lost without them. Help!!!