thee of four Jenn Air elements won't work

Had dual burner (electric) fail a few months ago. Replaced with dual infinite switch. Worked fine and still does. Yesterday, none of the other burners work, no indicator lights, but get very low heating. The one I had fixed still works well but seems that the wiring to the others goes through that one. Seems weird that three suddenly die. Jenn air said to replace the other three switches and that is fine as it is a pain to get to these so I am going to do that anyhow once and done. Has anyone dealt with this? Disappointed in the electronics on this. Seems to me that the life is too short. Jenn air not my fav but we needed a downdraft and it was one of the few available on the market.

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=JES9800

Here is the wiring diagram
http://www.servicematters.com/docs/wiring/Tech_Sheet_01_13_2010/Wiring%20Sheet%20-%208119P168-60.pdf
[COLOR="Blue"]
Jenn air said to replace the other three switches and that is fine as it is a pain to get to these so I am going to do that anyhow once and done. Has anyone dealt with this?[/COLOR]
That 3 infinite switches would all go out at the same time is not only unlikely but nearly impossible.

Had dual burner (electric) fail a few months ago. Replaced with dual infinite switch. Worked fine and still does. Yesterday, none of the other burners work, no indicator lights, but get very low heating. The one I had fixed still works well but seems that the wiring to the others goes through that one.
Sounds like you have a bad connection in the unit somewhere and havew lost half the line to theses elements.
It does not look like power goes through this unit but may have a common connection here.
Finding it may be a pain.
That the dual element works OK tells you that the power to the unit is OK.
So

Has anyone dealt with this?
No, I personally have not.