Hello. I bought a Sony STR DH820 AVR 2 months ago. I had it hooked up to a Monitor Audio 2.0 speaker system. I was primarily using it as a music system and was able to play my music collection on my ipod/ipad via usb.
Recently I hooked it up to a 37 inch LG 37LS5600 LED TV. I connected this to the AVR using a Cambridge Audio HDMI cable. Once I did this, few issues cropped up.
1) The USB functionality seems to have stopped. I have tried connecting an ipod and an HTC smartphone to play music. The display on the AVR indicates USB but after that nothing happens. My ipod flashes the message 'OK to disconnect'.
2) I am unable to output TV audio via the speakers. I tried using an optical cable and was able to output the TV audio. Doesn't seem to be working on HDMI.
3) I am unable to view the receiver GUI on the TV. I suspect it is linked to the above issue. Even though GUI mode is turned on, I am not able to view any of the options on the TV.
Would the experts have any idea on what could be wrong? Thanks in advance for your help!