I have a jenn air cook-top (JED8430BDS). The knob is in the off position, but a portion of the light around the 6 power position will not turn off, the element remains warm to the touch, will not turn off. Any idea what is going on?

That is an obvious burned wire, or burned thermal cutoff etc

try national parts depot

or look for new knobs that matches the fit and change the broken one or all of them.

No. They dont light up.

Purchase some silicone lubricant spray (available on Amazon for $5)

1) turn off power at the breaker. 2) remove hold down screws 3) pop up cooktop out of counter top 4) remove knobs and downdraft grille 5) remove ceramic top (screws around outside and also in side grille opening) 6) unplug burners replace with new burner

hi.gud day...tnx for question.im gerbee here in the phillipines, the problem of the the unit is have an dirt or water,& oil coz why the unit is not stoping cliking sound.the best thing to is clean the area were the problem it is,first unplug the unit & turn in off the gas line for the safety..get the vacium & bottle of thinner...first remove all the knobs of the control valve(make sure to remember how to remove the knobs coz if turn back as how you remove it). then drops some thinner located on valve switches(knobs position) 5-10ml,,,then put the vaccium in the place were u drop the thinner to suction the thinner,oil & some dirt.try 2 times for good result...after this if is not work n nid to call an expert tecnician to dismantle & clean the micro swicth one by one(no nid to replace the parts)
tnx gerbee

hi im gerbee,i will sujest to clean the area were is the place of ur knob control try to remove the control knob then clean it by using a vaccium coz sometimes the problem is very dirt of the control knob.

I just had the same problem- when I replaced the whole cartridge.
I repalced the infinite switch- do the one that gets the hottest- or do both.
It is easy to do- just write down the wiring diagram - make sure all power is off- cost of new switch was about $37.00
This solved the problem- however make sure to check the sizng on the new switch shaft as my old knob would not fit properly on the shaft of the new switch.
good luck

short in the fan wirring.. it is not easiy fix . you need to replace the fan and short wieeing.

I've had the same problem for 2 years. Today I removed the four burner tops, the 15/16 inch bolt that holds the burners in place, took everything apart (simple connections underneath), completely cleaned and dried eveything. I also cleaned the 4 knobs and making sure the 4 swiches slide up and down freely then dried everything with a hairdryer. Is now works fine but if the problem comes back, I'll simply unplug the cooktop and light it manually. P.S. I stripped one of the large 5/16 inch bolt that had become weak and brittle. - Try using water or some liquid to loosen the bolts as necessary. Good luck, CHEERS!