Instrument lighting.

[Oldun]

Hi folks,trust you are all wrapped up for the bank holiday?    I watched a video (american) about buying an S type ,when the ignition was turned on the drivers information panel and radio and A/c panels were back lit green,now mine are not back lit at all ! I have cursed this fact over the last three years but put up with it. In fairness after a life time of night driving ,I avoid it these days, so it has not been a great problem.It would be nice to correct it if possible ,I will eventually have to pass the car on or sell it ,so I would like it fixed . My question is can the lights be fixed?

Regards Mike