This problem applies to PM2 monitors only. When it occurs, the entire monitor screen goes blank, not just the heart rate display, when the Concept heart rate cable is plugged in. This is due to a short-circuit that occurs if the heart rate cable is plugged into the PM2 while the monitor is on.
- Push ON/OFF once to turn the PM2 off.
- Plug the heart rate cable into the monitor.
- Push ON/OFF again to turn the PM2 back on.