Resistor for heating element

Question edited for clarity, spelling of Dehydrator, add the Magic word, and toss in some CAPS!
Question moved from Computers and Internet category.

Help in the link

https://www.google.com/search?q=harvest+maid+dehydrator+Fd-5000+manual

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Contact one of the specialist Potentiometer suppliers

https://www.google.com/search?q=potentiometer+-+R1378428

Sears say all parts are discontinued.

https://www.google.com/search?q=Replacement+potentiometer+for+Harvest+Maid+Food+Dehydrator+Model+FD-1000

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Contact Harvest Maid directly to request the wiring diagram.

What is the make and model please, some dehydrators only have fans and no heating element.
Here is a link to the manual which has a phone number to call if you still have problems:
http://www.nesco.com/customer_support/owners_manual_download/english/
http://www.nesco.com/products/Dehydrators/

Maybe you should check this out first.
Cabelas Recalls Food Dehydrators Due to Fire Hazard

I had the exact same problem!!! Found the instruction manual under NEVCO food dehydrator.

http://tv.manualsonline.com/mdownloads/942de8cb-c4b8-42d4-a5dd-c29f369b7d7a.pdf

There is a recall on some of these. Check it out here:
http://www.cpsc.gov/cpscpub/prerel/prhtml11/11104.html

It has to do with something overheating. Maybe your unit is covered...

Take apart the bottom unit that contains the heating element. Hopefully it's put together with phillips screws. Mine are not. I'd have to drill out the brads that are holding it together. Once it's apart, use an Ohmmeter to check the heating element. Be sure to disconnect the fan from the heating element when ohmming out the element. If the element is open electrically, replace it. Good luck in finding a place to purchase a new element.