My ASR-10 is 5 years old. My problem is that once in a while it´s display fades away (goes black). Everything else is working fine (you can still play the sounds)! Does anyone know what part or component could be the reason?

I used an ASR-10 for 6 years. After 5 the display lost the bottom line across the whole thing so 0's lookes like n's and E's like F's. I had to purchase a new display daughter board. I still have the old one if you can't get the display any more. At least you'ld get to see most everything. I think I paid between $150 and 200 for the new one. I installed it myself so that does not include service.