Had the van out today and fuelled up ready to go away next weekend then noticed that the screen that shows mileage/time etc was not on, so I assume gone tits up. I know Cartronix may be able to fix it but before I send it away is there anything I can do. It has been away to Cartronix a couple of years ago to have the job done where all sorts of warning lights were coming up dim but don't think the new problem will be covered by that.