I have a five year old Samsung W/D set that was purchased new for a new house. The dryer is a DV328AEW. They are on the second floor of my house and the vent is in the foundation, about 28' with two 90 degree turns.
Three weeks ago, it lost heat. I pulled the element and found a break. As I feared, the broken element may have been caused by a larger problem. In sensing mode, it would go to 1 minute and hold indefinitely. We used it on timed mode and it began doing the same thing. I thought this must be a control board or dryer sensing strip. So I pulled out the 87V and put it to use probing.
I pulled out the stainless sensing strips and cleaned them with a scotch brite. I measured the Ohms and when I placed my moistened finger across the resistance would start at 400 Ohms and climb. I decided this was not the problem so it must be the dryer duct or the control board. I took the liberty to clean the foil dryer hose and make sure it wasn't kinking.
The control board was cheap ($60) so I replaced it. No help, Problem persists. On a side note, I build PCBAs for a living and that board is a sad piece of severely dated technology.
DW has the dryer duct people coming on Wednesday. Just wondering if I am missing something else? I suppose I will travel to HD or Lowe's to get a metal rigid duct this weekend. Does it sound like the vent to you experts out there?