How do I replace the switch for a jennair electric cooktop? model jed8430adb. Thanks!

It is possible to remove the downdraft equipment from underneath your JennAir electric cooktop and still use the cooktop, but it depends on how the downdraft equipment is attached to the cooktop and whether there are any other issues that may arise from removing it.
Before attempting to remove the downdraft equipment, you should consult the user manual or contact JennAir customer service to ensure that it is safe to do so and to obtain any specific instructions for your particular model.
Some potential issues to consider when removing the downdraft equipment include:

1. Airflow: The downdraft equipment is designed to help draw smoke, steam, and odors down and out of the kitchen. Without it, you may experience reduced airflow and ventilation, which could result in lingering odors or smoke.
2. Heat distribution: The downdraft equipment may also help distribute heat evenly across the cooktop surface. Without it, you may experience hot spots or uneven cooking.
3. Stability: The downdraft equipment may provide additional support or stability to the cooktop. If it is removed, the cooktop may become less stable or secure.

If you decide to proceed with removing the downdraft equipment, it's important to follow all instructions carefully and to take appropriate safety precautions. You should also be prepared to address any issues that may arise as a result of the removal, such as by using an alternative ventilation system or adjusting your cooking techniques to compensate for any changes in heat distribution.
If you're unsure about whether or how to remove the downdraft equipment from your JennAir electric cooktop, it's best to consult with a professional technician or contact JennAir customer service for guidance.

http://www.appliancepartspros.com/parts-for-jenn-air-jed8430adb.html

most likely the element failed

Hello, Thank You for using FixYa. I will be helping you today.You have to lift the unit up from the counter use some boards across the counter to support it and remove the screws from around the unit under the glass lip. On some units there are screws under the vent grille also. After removing the screws lift the whole top off.Thats all you have to do.
Thank You and please rate my answer if it was helpful..

Some times a breaker can be partially tripped and not visible . You should try turning the breaker off and on several times.

always unplug electricity before attempting to repair on any electrical appliance

you need a new on/off/speed switch from jen-air find it here: http://shared.whirlpoolcorp.com/sharedservices/dealerlocator/dealer_search.jsp?siteCd=JA_EN_US it is easy to replace. make sure the breaker is off before you remove the switch

hi...the unit is have an waranty call the service center to check & replace the part.

tnx gerbee

NO METAL KNOB FOR THAT MODEL COZ IF USE METAL EVERY TIME U USE IS HOT THATS WHY DESIGN FOR PLASTIC,MUCH BETTER TO U REMOVE THE KNOBS AFTER U TUNN ON THE HOBS TO LESS MELT THEN RETURN IT IF U TUNR IT OR ADJUST.

You can get a new cooktop surface from Maytag/Jennair for $229. It is a pain however to replace it. Where is the crack in your cooktop and does that crack pass directly through a heating element? If not, then you may be able to repair it. I broke the corner off mine, and then dropped the piece (now 5 pieces). I was able to bond them back together and you really can't tell it was ever broken. But, it takes some work.

There is no fuse on the unit. I suspect your house circuit is blown. If not, then a wire may have burnt off. Hope this helps!

the unit doesnt have any internal fuses. you have a house fuse blown or circuit breaker that tripped. the fan switch can be found online or from your local parts house and make sure you get the clips to hold it to the mounting tabs.
next time you get ready to work on it, just make sure and turn off the power first as you will touch the metal terminals to the frame again.