Fault with bar lights?

[eddyg2007]

I was working in a pub where the bar lights were not working........ the circuit breaker was tripped so i turned it back on and i was getting power to the other lights as they were working but the lights above the bar were still off, so i went up to the ceiling to look further into this fault. I managed to trace the cable to where it was coming from which was up through a joist. I am not getting power to the transformers as it is 12v downlighters. any1 any ideas as where to go from here? thanks

 

[mdshunk]

Probably the next step would be to grab the phone directory.

 

[sparky1ste]

if theres no power to and not from the transformer then the problem lies either from the last light working or from the last light to the j/b-j/b to transformer