WESTLAKE VILLAGE, CALIF. — J.D Power and Associates, the market research firm, said consumers are largely happy with the performance, features, styling and price of their major appliances.According to the results of its 2007 Major Home Appliances Study, only one in 10 consumers report some kind of problem with their major appliance during the first two years of ownership, and many of those problems can be resolved by following instructions in the owner’s manual or on the manufacturer’s web site. Relatively few problems actually require a service visit, the report said.Top satisfaction scores went to Bosch in dishwashers, Maytag in freestanding ranges, GE in built-in cooktops and wall ovens, Whirlpool intop-mount refrigerators, Samsung in side-by-side and French door fridges, Kenmore in O-T-R microwaves, GE in countertop microwaves and LG in washers and dryers.The study was based on 22,637 responses from consumers who purchased one or more new major home appliances through a retail store, their new-home builder, or received one through other means (such as a gift) during the previous 24 months. Customer satisfaction was measured based on performance in six factors: operational performance (including how well the appliance functions, noise level and energy efficiency); operational features (such as the number of settings available and appliance capacity); ease of use; styling and feel; price; and warranty.