You flying a Phantom 2Vision + ?
I have a P2V, and only have 3 lights each arm.
Might just be a burned out LED ( light emitting diode )?
( this will not cause problems with the bird, more annoying than
Anything else! )
I would not worry too much about it, as long as everything else is ok!
No problems flying and such.OR You could try taking it apart, and replacing
THE Bad LED. Would require soldering!
Hope this helps! Please keep us updated on your findings!
Jerry D
USA
( J Dot )