Be sure to unplug the stove from the electrical power prior to testing.
Sparkers do go bad, so it could also be a defective one. Each sparker has a wire that pulls off the sparker element body. You can disconnect one at a time and test to see if the sparking stops.
If the sparking continues, then reconnect that one and disconnect another. Continuing with each sparker one at a time until you locate the one that may be causing the problem. The one that stops the sparking is the culprit.
If all the sparkers are sparking, the most likely cause is a defective capacitor in the spark modual. Spark moduals are not repairable. The entire part must be replaced. Replacements are available at the local appliance retail parts store listed in the phone book.
Another possibility is moisture during the cleaning process found it's way onto one or more of the switches. Excessively wet sponges or cleaning cloths allow water to get onto the switches, which will cause this problem, if applicable.
If this happens to be the case, then remove everything on the stove top and lift the lid, if applicable, since not all stoves have liftable top lids.
Remove any clear plastic covers on the valve stems, if applicable. Blow warm air over the switches using a common hair blow dryer. The idea here is to dry out the moisture, if there is any. Don't laugh....this hair dryer trick often works!...
Another cause could be reversed electrical polarity. The plug end will have 3 prongs. It must be directly connected into a properly wired and grounded wall recepticle. Reversed electrical polarity over a long duration of time will destroy the spark module.
Do not use 2 prong extension cords to lenghten the existing appliances electrical wire. DO NOT bypass the grounding pin on the end of the appliances electrical cord. Doing either of these will also damage the spark module.
If you attempt to do any repairs, be sure the electrical power is turned off or the stove is unplugged. If you choose not to do the repairs yourself, contact the dealer's local service agency. Until then...unplug the appliance and light the burners with a match.
The only positive proof any part like a spark modual is functioning correctly, is to carefully remove the part or parts you suspect to be the potential culprit, and have the local appliance parts store person run the required tests and or help make the final determination which part or parts are defective.
Retail parts dealers can also help determine what the possible problem may be. Bring the make, model and serial numbers. Appliance parts dealers carry replacement parts for all appliances and are listed in the phone book under appliances. Appliance parts dealers test and stock replacement parts for all appliances.
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