Glow bar??

Question

This is a gas wall oven. Turn it on and it does not heat up. When it did work it starts at 100 degrees and goes up. I can't get it to go past 100. No gas pop when it starts and no flame at top or bottom. Question is this- There are two glow bars (I believe) One on top of the oven in clear view and this comes on with broil- and it does work one. The other is under the two pans- One comes out to clean and the other has to be removed with tools. I am assuming this is the glow bar that needs to be replaced on the bottom. Is this something a notso handy woman can replace? I figured I got this far maybe I could try it.