Guess the best place to look is where there is commonality between these. Maybe a signal wire or ground in the fairing. If everything is stock, I'd start with the cluster main connector, visually look for broken, damaged wires from there down where it makes its way back under the tank. Gently tug on each wire on the connector to make sure none are broken in the connector. Check the grounds in the fairing. If you or someone else has added anything electrical/electronic try removing or disconnecting these items. Because the system is CANbus, it's also possible the ECM is damaged but I wouldn't look at that as the issue until checking out everything else. All in all, you're looking at a missing +12V power wire or GND wire most likely.