Whirlpool 21.0 cu. ft. Top Freezer Refrigerator with IceMagic Plus Ice Maker "er2chmxpb04" Questions

2008 Whirlpool ER2CHMXPB04 (top freezer) - Occasional burning smell inside refrigerator (like wire insulation). Could the compressor relay cause this, or would it be something else? If something else,

ice collecting on floor of freezer and water dripping inside frig Serial #ET3015023 Model ER2CHMXPB04 Purchased 7/28/06 Diane Schneider Most likely you have a blockage in the defrost drain that begins