I am hoping there is someone out there who can help.

I have a crashed qrx35o. I have removed one of the speed controllers to run a small brushless motor in a small foamie. It works well.

However the servo wire from the speed controller has two wires, signal and earth. The power for the receiver has to come from a separate battery.

My question is, where on the speed controller board can i take a red lead for power and eliminate the second battery?

Thanks