I am running Epson PLHC3500 (6-months old, replaced an older Panasonic) through a Denon AVR-1913 receiver (4-years old). After 4 months with no problems using the new Epson, the system now drops the visual signal about once per hour (on average). The audio signal continues to play through the surround speakers, and no error message is displayed, the screen just goes black. A few extra notes: If I turn the Denon off and then back on the signal is normally restored. This happens using a Charter cable box, a PS4, and an Apple TV It SEEMS to happen more frequently when the room is very dark, but I may be imagining this part... Any thoughts on what could be causing this? Thank you in advance for your help!