An indicator lamp tests positive for continuity but does not light up. What could be the issue?

The indicator lamp showing continuity yet failing to light up indicates that there may be an issue within the lamp itself despite it appearing functional. Continuity testing simply verifies that electrical connectivity exists through the lamp; it does not confirm that the lamp is capable of producing light.

When the filament or internal components of the lamp are damaged or have degraded due to age or other factors, the continuity may still be intact, but the lamp will not operate properly. This situation illustrates that while the lamp can conduct electricity, it may still be defective in its primary function of illuminating, denoting that it requires replacement to restore proper operation.

Other options do not fully capture the likely scenario. A well-functioning lamp should light up when there is proper current flow, so if it does not light despite showing continuity, it strongly suggests internal failure.