Thermador PRD486JDGU Oven Lights Not Working Properly

[Space Time]

Oven Lights are behaving strangely:

1. With both oven doors closed, the small aux oven light panel switch does nothing. However, the main oven light switch individually will turn ON all oven lights. However, the aux oven light is at 10x brightness and the two lights in the main oven are very dim.

2. With the panel light switches off (flipped down position), opening the main oven door turns on all lights but like above the small aux oven is 10x brightness and the main oven lights are very dim.

3. With the panel light switches off (flipped down position), opening the small aux oven door does not turn ON any of the oven lights.

4. But this is the operation now as I write this. Tomorrow I will have some other weird combination of switch position(s) and door opening combination that turns ON the oven lights, seriously???

All bulbs are new 12VDC 10-watt and operating properly. They have been tested on a Rigol power supply an pull 10W. I would like to bench test the transformer but can seem to find its location in the range.

Any suggestions?

 

[Space Time]

Are drawings or schematics available that detail the Thermador Range. I have the wiring diagram but would like to determine location of the oven light transformer?