I have a Panasonic TC-P55VT50 TV, Monoprice HDMI switch w/ Optical (PID# 7974), Apple TV, PS3, and Logitech Z-5500 sound system. I use a Logitech Harmony Touch to control my devices. Using my Apple TV and PS3 works fine for audio and video. (These devices connect to the switch via HDMI and send video to the TV and audio to the speakers via an optical cable.) If I watch TV using my OTA cables, the only way I can get sound is by keeping on Viera Link on the TV and ARC on the switch. (The antenna sends video directly to the TV and audio is sent FROM the TV TO the HDMI switch which send it on to the speakers via optical cable.) Anyway, my problem comes when I turn off my system and the last activity was watch TV via antenna. This causes the audio to go silent next time anything is used and requires a power cycle on the switch. The strange thing is, if I switch back to the HDMI 2 input (where my switch is plugged into the TV) the ARC light turns off on the switch and the next time I use my system everything is fine. I'm having trouble understanding ARC setups and getting this to work. I can't always switch back to HDMI 2 when sitting off the TV, so any help with the switch and TV setup would be greatly appreciated.