I am having a little problem with my Onkyo TX-NR626 bought last August. I have my cable TV module connected via HDMI for video and on the RCA analog for audio. When I turn on the receiver and select the CBL input (the one used for the cable tv), for some reason in some instances it stays on for few seconds than turns off. In some other instances, only the video works and sometimes everything works fine. This does not happen when I select blutooth or FM input. A friend told me maybe the power source is not sufficient, but checked every connection and specs and all seems to be ok. Is there something to do with the way they hookup the HDMI+analog or should I be concerned with real problems on the AV receiver? PS1: don't ask me why they installed HDMI for video + analog for sound, they say this is the only way to have the sound from CBL input PS2: the video on RCA is not connected.