I HAVE A MODEL #7904417 kenmore cooktop large front burner want come on . what is the problem?

Your front burner is fine. Assuming you have an electric cooktop the problem is in the switch that controls that burner. The infinite control switch. Replace it.

Bad control or infinite switch. replace the switch for that element and you will be good to go.

If it was the burner element it either would work or not (no in between)
It has to be the switch


If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

you need to check the wiring to that burner it appears that there has been a short to the burner

the stove you have takes someone with an electrical knowledge to test and you don't want to break the to!!!.that said test burner for continuity if there control board bad

how do i change the burners on eletric cooktops

You need the switch for that burner. The contacts inside are stuck together. You will need to pull the unit and separate the glass from the lower body to access it. To get the right switch you need full model and serial number located on a plate at the bottom of the unit.

Your ability to perform this is dependent on how mechanical you are. The Whole unit must be removed from the counter opening and the base unscrewed from the glass, remove knobs before disassembling. For someone mechanical this is not difficult. De-energize whole unit first.

Once the two pieces are separated the remainder is mechanically easier. Disassemble the box on right containing the switches and replace the correct one. Reverse the process for reassembly. Good Luck

There are a series of holes in the burner leading down from the main flame area to the pilot tube, ensure the holes are not plugged/restricted.

sounds like you have a bad switch. maybe on the large burner.. some of those switches can be replaced without the whole harness.

The outer ring of the element is most likely broken. You'll need to replace the element.