A faulty camera made smoke come from my drone and a diode marked D2 is burnt out. I have removed the board. My queries are. 1. can you buy a replacement (silly question perhaps from past reading of getting spares) 2. does anyone know what the diode is - from a diagram in this forum I have identified the wiring & know it sits between +12 and -12 on the zenmuse connector. 3. can I leave this board out and just fly as I have been doing. The drone flies fine (although I have not tried it with this board out) but I would like to have telemetry and gopro pro as per a diagram which I got from this site. I do have electronic expertise and can solder.