[Dr.D]

So this morning I noticed the fourth light from the bottom no longer illuminates. Everything seems connected properly, and I cannot seem to find another cause.

Does anyone know why a single line in the bar graph would go out? Any fixes?

[Kingpin]

Is it an LED bargraph? My first guess would be that the LED may've burned out... Being at the base it's getting more of a workout than the others in the stack if you've got the up/down motion going on it.