I have a double wall-oven, which has a small indicator light behind each control knob. The lights shine through the instrument panel so you can read the selected temperature.
The light for one of the knobs for the main oven has failed, which means neither knob for the main oven lights up. It is not a showstopper - if you shine a torch from the front you can make out the settings - but it is a pita.
The oven is from around 2000. Although there are some parts stocked, that particular part is no longer available (and I have tried several sources, both here and in Australia where it was manufactured). So the service agents have stated it irrepairable.
I have not completely disassembled to see if the faulty unit is repairable without replacement.
My thinking is to at least swap the light-units for the lower oven and main oven (because the lower oven is used less frequently). It would also be nice to (safely) bypass the faulty light so the other light unit in series works.
The wiring diagram shows two 2W lights in series with a 40W ballast, which suggests it is not simply a miniature incandescent.
Does anyone have any useful insights on this? I have uploaded the wiring diagram.