All lights on TS510 small control panel in garage?

I switched off mains electricity to replace kitchen socket. When I turned on the elec again all led lights have come on in the small TS510 alarm panel in the garage [The main one in the house is still working ok] When I press the buttons on small control panel in garage it makes no difference as it doesn't seem to register. Can anyone help please? Could this be an internal fuse? In which case where Might I buy a replacement please?