Different light assemblies can have different service requirements within one appliance. Check each component's instructions instead of assuming they use the same bulb or access method.
What the observation tells you
Some units use sealed LED modules, and a removable-looking cover may not authorise electrical work. A failed light also does not establish whether its compartment is cooling. The correct isolation procedure applies regardless of which door is open.
A useful next step
Identify the affected light and full model, then follow only the permitted owner process. Leave service-only assemblies to a competent repairer and assess food temperatures independently.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.