First check to see if one side of the breaker for the range is tripped. You should get about 240VAC between the two (almost) vertical terminals of the outlet. Try flipping the doubled breaker off and on a couple times, then see if the elements begin to heat. Post your result.

We just got a Fridgidaire Electrolux Professional Series Range (Model PLEF398CCC) also 5 yrs old and had the same problem occurring. The convection fan comes on, but neither the broiler or the bake is working. We can also set the Self Clean option, but no heating occurs. However the range top works perfectly. :confused:

We had an appliance repair guy come over to check it out this morning and he tested the heater elements for the oven and broiler and they're good, but they're just not getting any power. He said it was the Power Control Board that was bad and needed replacing.

Just order the part today, so won't know until it comes in on Monday, if this part solved the problem.