I have had the same problem on about 65% of our T-2Cs. One client has four and all of them have needed a power reboot. A few have just outright turned white on the LCD, showing no graphics and not responding to any hard buttons. I have returned six just this year for this issue, but RTI has no record of the issue from our returns or anybody else. Call RTI if anyone else has the issue since they don't seem to be aware of it.