Yes, most certainly, electric ovens are generally easy to repair. Most repairs require replacement parts to solve the problem.
If the oven light comes on, but the oven doesn’t heat up, it usually suggests a faulty element. If it’s near impossible to calibrate the correct oven temperature, the sensors inside the oven may have stopped working or are faulty.
It could be that the dish you’ve just cooked didn’t cook as expected. You carefully followed the temperature settings and timing, as given in the cookbook, but it still didn’t cook completely. It can be even more of a problem with delicate recipes!
Contact serviceteam to get your oven repaired now!