Uptown, while it's true the stick doesn't produce any power, power is being supplied by your rig to the stick. Once powered the stick then returns some of that power back in the form of signals, at a much lower voltage, we're talking milivolts. Power being supplied is much higher (in order to illuminate the lights). The return signals (voltage) sent by the stick back to the rig after running through a series of diodes and/or rectifiers, thus seriously reducing the DC voltage signal.
Best guess Bro, without testing the diodes, is when the stick was slammed a diode and/or rectifier was damaged. It's real easy to kill one, hell by touch alone (been there done that

) Generally if the diode is located on a PC board, ya end up replacing the entire board. Probably better to just replace the stick than have to disassemble, break solder joints, then reverse, hoping everything goes back together without leftover parts

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Rokit