Answer to "Dryer won't start. No error codes. Replaced thermal fuse, door switch."Check on the inside surface of the front lower panel, and hopefully you will find a diagnostic/tech sheet that will allow troubleshooting of the control board (front panel board). If a microswitch had gone bad, the computer will not allow any startup at all (appears dead at panel). The diagnostic is easy with a regular ohmmeter. but you do need to completely remove the board. If board is bad, replace ($300+), or if its just a microswitch.. remove and resolder a new one ( $0.50). Good luck ! (btw, I posted why I think this is a design fault of the he3/4 line , and a workaround ,in one of my other posts)
Answer to "has no power at all, no lights, no nothing"There is a design issue with the Kenmore HE4 dryer, and this is likely similar to the HE3 line. The HE4 (correct me if the HE3 is different..) has it's air exhaust below the front door. What happens is, clothes will tend to block this vent as they slump around. Moisture will build up in the cabinet , which isnt a big issue in itself, as you did put wet clothes in... but enough of this moisture makes its way thru the cabinet onto the two control boards., causing issues. On mine, it would intermittently refuse to start (no lights , no response to buttons). This turned out to be one of the front panel microswitches.. it had corrosion around the pin connectors. The chipset does a self-check before startup and it found the switch apparently in the fully pressed mode (the corrosion). Replacing the small switch ($2) solved the issue. The design fault can be worked around. All you have to do is make sure the clothes dont block the vent too much. One way to do this is do only dry very small loads. The better way,...