Hi Edward,
Our FLX24 (about 5-6 years old) has started exhibiting similar intermittent problems. It has not suffered any impacts that I am aware of. You mentioned in a reply to a similar problem that some components (presumably cards or connectors) may not have been seating properly. If this is a possibility I can open it up and check. (I have had a similar problem with our cinema projector, though sadly it has turned out that we need a completely new card!)
We are in the middle of a show run and on two occasions it has taken several attempts to boot - it seems to get stuck Galway through the process. The LEDs keep cycling as usual but it doesn’t get anywhere.
Mike