I wired up a Crystal Focus 8 with a Color Extender with a 7.4v li-ion battery yesterday, and I noticed an issue after finishing. It has to do with the main LED.
For one, whenever you go to the Red only color profile (placed on Ch. 1 / native current inductor), both Ch. 2 (Green) and Ch. 3 (R. Blue) light up slightly.
I also noticed that when you press the aux button to change fonts, the R. Blue diode on Ch. 3 (Ch. 2 CEx) will light up upon being pressed.
I will try a different SD card today... as I am thinking it may have an issue with it, but I am just throwing this out there to see if anyone can help diagnose this issue quicker.
Thanks in advance.