Secure Watch (HKC) Keypad No Display or Power after cable cut

Hi, I wonder can anybody help me out… My wife cut the wires running around our fireplace she thought they were old speaker cables, But they were for our Alarm system Secure Watch (HKC) I reconnected the wires.. I wound them together and had planned to solder them once all was working.. The problem is the Keypad went off when she cut the wires and never came back on even after re-joining the wires. A friend of mine suggested wiring it directly from the control panel to see if the Keypad had shorted, I done that and the Keypad still didn’t light up… So I managed to get a second-hand Keypad (Same make and model) and installed that, but still no power.. The Siren outside is sounding every time we put power on, Alarm is on the Immersion switch so had to power that off on the house Fuse Panel…

Am I missing anything I need to do, I’ve had a look at the fuses on the control panel and they all appear to be ok,

Cheers