Whats wrong if all the lights attached to a transformer go out at once?
First, check the plug at the wall outlet. Plug a radio or light into the outlet to check the circuit. If that checks out, the next thing to know is that all of Hafeles transformers feature Electronic Short Circuit Protection. If one of the fixtures develops a short, the transformer will detect this and shut down the entire system. Try unplugging the fixtures from the mounting block, one at a time. This should help you determine the fixture with the short. Upon correction of the problem, the transformer will restart.
