Multiple LEDs were dim together
The broad pattern suggested a shared chain problem rather than several independent burned-out lamps.
Door switching still worked, but cabinet lighting was weak and only 2.6 VDC was reported at one module. The next branch was the upper-center freezer lamp rather than the main control.
A similar symptom can have a different cause on another appliance or model.
The broad pattern suggested a shared chain problem rather than several independent burned-out lamps.
That observation separated the dim-output complaint from a door switch stuck permanently open.
Technicians identified that module as a known point that can load the rest of the LED circuit.
The source supports the freezer ceiling LED module as the first component to isolate in a cabinet-wide dim-light pattern. It does not report the replacement result, so the module remains a strong diagnostic branch rather than a confirmed repair.
Record which lights are dim, which remain normal and whether the door switch changes them. A technician can then isolate the model-specific LED chain and confirm the upper freezer module before replacing a control.