06 Yamaha G22 Won't Run

[YamG22]

I have a 06 Yamaha G22e. Cart was running fine. Parked it and hooked charger to it overnight. Disconnected the charger in the morning and the cart wont run. So far I have checked the cables, tested battery pack voltage (51v) 50.9 volts at the motor. Checked 3 amp fuse, it's good. When you turn the tow switch from tow to run the solenoid clicks, you hear a low hum for about two seconds and the solenoid clicks again and hum stops. When the accelerator pedal is pressed you get the same click,hum,click but no power. I cleaned the battery connections just in case and recharged and shows fully charged but same issue. Any clues as to what to test first and how ? Any help is fully appreciated. Thanks