Gibson DARK FIRE - My headstock hit against the wall, and now one of the Powertune heads doesnt work.; For a “tighter” rhythm guitar part when recording, I wanted to remove the A, G, and (high) e strings because I kept hitting them accidentally, but then the tuning system didnt work. Why?

1. On the back of the guitar, take off the back plate nearest the output jack.
The battery is on the left in this picture.
2. Locate the battery and disconnect the red wire.
3. Wait one minute and reconnect the wire.
4. Make sure the battery is in its proper position, then close the backplate.
5. Charge the guitar using the included TRS (stereo) cable. IF you suspect the cable is defective,
use a different TRS cable instead.
6. After 90 minutes of charging, pull the MCK, turn to C, then press on the Display Matrix and
hold it for at least two seconds. The Display Matrix should indicate that it is charged (two red,
two yellow and two green bars; see Chapter 4 for more details).
My headstock hit against the wall, and now one of the Powertune
heads doesn't work.
If you hear a winding noise but the Powerhead doesn't move, it might be a connection issue from the
powerhead to the neck circuitry.
Inspect the tuning peg that doesn't work. If its case is rotated, rotate the Powerhead back to its
original position (level with the back plate with the lit up G); this should fix the problem. Then, tighten
the nut to make sure the Powerhead stays in this position. Avoid overtightening—do not exceed 1
ft/pound torque maximum.
For a “tighter” rhythm guitar part when recording, I wanted to
remove the A, G, and (high) e strings because I kept hitting them
accidentally, but then the tuning system didn't work. Why?
The strings carry low voltages and data, as well as provide grounding. The E, D, and B strings are
ground. The A, G, and high e strings carry a positive voltage and data. By removing those three
strings, there was no way for the tuning system to provide data on how to tune the strings.
Gibson Dark Fire 4.0 manual, page 37