I was confronted with a 10 year old oven that would not light. Figured I'd call the guy, be at least $150. Then I thought, well let's just look into this. Turns out it's not a pilot light (didn't think so) or a spark igniter. It's a "glow bar" that the juice heats up. The current that it takes to glow tells the gas valve it's OK to open. Usually it's this igniter bar, which is diagnosed with an ammeter (mine in fact was glowing just fine). Now, in all my 61 years of futzing with stuff I've never needed anything but a multimeter, not an amprobe. So off to Lowe's I go, where they're about 3x what I expected, $70. As it was something I'd likely never need again, I stood there and thought a while. There's an igniter on the broiler! So I went home and switched (took 20 minutes) and voila! Now the oven worked, the broiler not. So after some more goggling I found a new part, $30 free shipping. In five days the oven works for $30 and maybe an hour's worth of effort. None of which would have been possible pre internet. I can't imagine trying to find the repair manual, and then the part, in the days of mail and phone. Anyway, if you have the inclination it's amazing what you can in fact accomplish with the net and some effort. Good luck out there!