This guide will take you through how to troubleshoot the CountDown2 unit in a systematic fashion, checking the power supply, timers, displays and XLR connections.
3. Can you set the time on the remote displays?
Now that the power and the main unit timer has been checked move on to checking the remote displays. If you cannot set the remote displays then isolate whether you have a XLR cable problem. No cable run should be more than 100m. Check and change the XLR cables with known working replacements and then re-test whether you can set the time on the remote displays.
If the remote displays are now working then you have a fully functioning system