Quote Originally Posted by Geoff57 View Post
morning all
on the two psu s there is a green led on the larger unit it is lit up on the smaller unit it is not, does this mean the unit is dead ?
thanks Geoff
Ok, then you have found the source of your problem. If the small PSU as a fuse checks this, also check wires are not loose(do this with power off). If not fuse or wires then it's dead.
To replace you will need to find what power output it was giving you. The BOB will take between 12-24Vdc but it could also have been powering things like relays so it's important to know the output and replace with the same size. Looking at the relays in the box I'd guess it's 12Vdc because they look like Automotive relays which will be 12Vdc.