Quick check, turn on the hopper with no paint in. Drive cone should start spinning. Stick your finger up the feedneck (at the point you would put on the gun), drive cone should stop spinning.
If this is true to your hopper then the eyes would appear to be fine.
If you know anyone with a Halo then you could try changing the boards over and see if problem exists.
The alternate green / red flashing lights would indicate a jam.
Have you got the anti jam spring and beads installed?
Also try new batteries and post up if any of this helps, if not we can go from there.
Jnr