What do i do to figure out why my windshield wipers. don't work on 1993 Chevrolet Blazer

They just stopped working completly and the fuse isn't blowed

Asked by for the 1993 Chevrolet Blazer
Circuit board on the wiper motors gave a bunch of trouble around that year.... can buy just that part.... Also, make sure the wiper motor itself is grounded... have seen them loose their ground circuit. ... Any of this make sense to you??