It is hard to tell you exactly what you need without seeing the razor and testing it. Most likely you will need a new display, a new control board as that is directly behind the display, and then you will need new led pads.
Your best and most cost effective solution would be to send it in to us for repair which would be $120.00 and that includes all parts and shipping. To purchase the parts and repair it yourself will cost more than that. Let me know if you would like to send it in...if not I can send you a parts list with prices.