Longmeadow

It was the 1A speaker fuse, which looked ok but obviously was not. System working ok now.

Thanks for your response. I have visually checked the four fuses I can see on the PCB (1A RKP,1A speaker, 1A bell/strobe and 1.6A battery), they all look ok, but will test them properly tomorrow. Can't see an AUX fuse ?

Thanks you are absolutely right, I should have thought of that !