Originally Posted by Upup
The M1 connector must be on to power the board. Not like a receiver the KK2 only gets power on the M1 connector.
Hopefully this is/was your problem.
Hi the board was powered M1 was connected, the screen powered up, as was 2-3-4 I did try disconnecting 2-3-4 leaving M1 to provide power in case there was a conflict between one of the esc
The board has always had power the KK screen receiver test showed 0 on the throttle I did try calibrating the esc via the kk2 but that caused the screen to blank
So now I have two problems