It is getting more and more expensive to have appliances repaired. The average cost rose from $254 to $275 in 2014 for projects ranging from dryer repairs to oven repairs and even washing machine repairs. When you buy a new dishwasher, it should last at least nine years before you have to think about it again. The problem is that within the first three to four years, one in five dishwashers will need some sort of repair. There are things you can do to keep yours running the way you want it to. Dishwasher repairs are not inevitable. Scraping is…