My MES40 stopped working last week after about 3 years of regular use. I found that one of the terminals on the heating element was totally corroded/failed. The other connector and the rest of the wiring all seemed OK. I read all the forum posts I could find on this type failure and found that a good fix it is to (1) crimp a new female connector to the existing wire, (2) clean up the male stud on the heating element with sandpaper/wire brush, and then (3) slip the new female connector on to the cleaned up male stud. Seems simple enough. The thing I am not sure about is how I should cover up the repaired connection. Also, I find it curious that one of the connections totally failed while the other one looks just fine.
1) Any opinions/knowledge on what causes this type of failure? I am guessing that perhaps the original connector was a bit loose on the stud causing arcing or the metals on the element and original connector were dissimilar causing galvanic corrosion.
2) Any opinions/knowledge on how to prevent future failure? I am guessing that some dielectric grease and then some electrical tape (high temp vulcanizing type) over the connection would be a good idea.
Edited by hkeiner - 5/16/14 at 2:54pm