How to wake up a sleeping Genesis Digital Lens?

Some years back when my unit went into undocumented sleep mode the tech at Genesis ( no longer in business?) told me to do some sequence of remote control button pushes to turn unit back on. At least that's how I remember it. Has anyone run into a situation where simply pressing the power button fails to turn on the unit? Remote batteries fresh and strong. Although my Monarchy DIP works well, I would like to use the even better Digital Lens again.