While heating something up my parents microwave went off. With it going off in the middle of a job, the display went blank too. All the cooktops and oven still work though. Behind the display next to microwave, I found a 15 amp fuse blown. That was replaced, but no display or microwave. I cant really see what is powering up the display panel, need some wiring diagrams, schematics so I can find the problem part. Any ideas? They have had this unit since 1991, its old but needs fixing not replacing.
Thanks