Bft Ares Gate not closing

[Hatbat]

On further testing last night I have confirmed that the voltage available on pins 12/13 of the Ares controller is not the expected 24V, I have once measured it at 3.3V and once at 9V. This is confirmed as the separate keypad that is also powered off these pins doesn't work either and doesn't have it's usual courtesy light.

Wondering what the options are here - hoping not to have to replace the master board. Separate power supply to the accessories?

Thanks
Hatbat