Not altogether sure that the display has direct fuse protection! Some of these display's have inherent problems were upon they die slowly over a number of years, i.e Lexus 400 and Saab 9-3 were the LCD starts to smear slowly before finally giving up the ghost! As yours is a 91 there is a possibility that this maybe so!
Try the main dealer first with a phone call just to see if it is a known problem/issue with your model! Good luck