I recently bought this unit for a friend who needed a newer dryer to replace his older unit. According to the s/n it appears to have been built in 2007 and it had one wire leading to the heating coil that was burned severely. This is the top wire and I have seen this fairly often. I repaired this using a new section of wire of the same size but am interested in hearing from other techs who have seen this and if the repair will last very long. This dryer was in very good clean condition.