I have recently purchased the LC-60SQ15U and am very happy with it so far and have found it to be very easy to get used to all of its functions. However I have not been able to use the ARC function with my Pioneer SC-1523K AVR, I am using the optical out from the television instead. I double checked all settings and everything is set properly so I'm guessing this is an HDMI compatibility issue?
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SONY STR-DN1070, SONY BDP-S7200, Sharp Q+ 60SQ15U, Monster Power HDP IR 2550, Klipsch Quintet SL, Klipsch Sub 12