Help with Speed Passion Reventon Pro Please

[spybot]

Just bought a Speed Passion Reventon Pro with Speed Passion Competition V3 5.5t motor. Struggling to get it to work can set neutral point, full throttle & full reverse points ok but when I switch it back on it lights up ok but will not power the motor. Removed all wires & then 're-soldered everything, changed receiver wire but still no go. Anyone got any ideas?