What's actually wrong with it, and which brand is it (please don't say "Neff" - it has the wrong vowel!)? Does it have a 13A plug or is it wired into a cooker outlet? Did it blow a fuse when it died (or trip an MCB), or just stop heating? Did it blow an RCD ("Earth Leakage Circuit Breaker", as-was), and if neither, do the controls still look like they might work (does the clock light up)?
As others have said above, they are usually _very_ simple electrically, although sometimes the elements can be awkward to get at. Basically the elements that look like old-style cooker rings (tubes bent into curvy shapes) can be quickly and cheaply replaced, as can things like thermostats (even more quickly, usually). Our N*ff one has the other elements as part of the structure, so if one of those goes, the whole thing is toast*, but both of the ovens have browning/grilling elements at the top, which are a quick job to replace.
If you don't want to do it because of lack of electrickery knowlege, any sparks will probably appreciate having it sitting out on a workmate or similar to make access easier. It's how I've worked on ours in the past - slide it out onto a workmate, fix it, put it back. You can also do simple tests with a meter, to find the damaged bits.
E.
PS: the wiring is often a bit fragile, so if you do remove it, be careful of wires stuck to the inside of removable panels, and of the fibreglass insulation usually used around the oven chambers.
*see wot I did there?
