I have a strange one. I have a dedicated theater room with LG projector and Pioneer elite AVR. The theater room was built 3 years ago. Had issues with ARC (actually eARC) since the beginning. We are far in the country, so no audio pros are around to come out. When I hooked my ROKU to the projector, everything is fine until I turn on the lights. The sound stops. Turn the lights off, the sound comes back (unless the lights are on for over 10 minutes, then need to restart everything to get the sound back). When I hook the ROKU to the AVR, all is OK (no sound issues, picture comes through the eARC - but the AVR only supports 4k 60 - so don't get full 4k when hooked this way)
I tried adding Ferrite rings to both ends of my HDMI cable, but no change. The lights are LED, on a dimmer. The HDMI cable is about 65 feet, run through the walls. Anybody have any ideas????? I was either going to try a battery UPS to the projector, to hopefully smooth out interference in the electrical power, or replace the AVR, or replace the HDMI cable, but all those things will be difficult (no room on projector stand for UPS, long cable run in walls and $$ for new AVR) So, I am asking for advise. Thank you in advance!!!!!
