William H Coarsegold , CA March 16, 2014 Appliance: Maytag Washer- Horizontal Axis MAH7500AWW Maytag Washer Mah7500aww: Constant imbalance message. How to replace Internal Unbalance Switch. Maytag Neptune mah7500aww Wouldn't spin, in Diagnostic mode the imbalance showed even when the washer was not running. A few minutes research led me to this sensor. Ordered it up and 3 days later the part arrived. Removed the door and the screws on the opposite side to remove the face of the washer and then two bolts pointing up into the lid. With the lid tilted up I found the sensor mounted under the concrete block. Installed the sensor, rechecked for the imbalace in diag mode and it was back to zero. Put it back together and it works just fine! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes