It sounds to me that some part of the circuit possibly an IC is overheating after several hours and develops a fault.
This will be a very tricky thing to track down. So maybe best to take it to an authorised service agent.
SOURCE: No surround sound from my PS3 through the Onkyo 5100. Video OK
Unfortunately only the higher end Onkyo Reciever pass audio over HDMI for sound. 605,705,805,905 exc. Your reciever will carry Video over HDMI but you will need a digital optical cable for sound.
thanks.
SOURCE: Picture sound blackout (blink) when cable box/receiver HDMI used
Onkyo service told me, the second timethat I called them, that there is a known HDMI handshake issue with Motorola and Atlanta Scientific cable boxes. The only solution, and it was a solution, is to connect the box through the HDMI 1 port ONLY. All the other (2,3,4) result in blinking/dropping of signal. I did this, changed the cable/satelilte setting to HDMI 1 and all is well.
SOURCE: I have an HT-S6100 Onkyo Receiver and can't get a
If you are using HDMI, it will not work. your version of HDMI is 1.1 or 1.2 which were riddled with issues. The current version 1.3a is working well "so far" Unfortunately it's not just a firmware update, it's hardware as well. Best way to configure is to run HDMI directly from Cable/DSS receiver directly to TV then run coaxial or optical to receiver. Hope this helps. If you need further info on HDMI issues, Google HDMI problems and you can read for hours.
SOURCE: I have an Onkyo HT-S6100 home theater not sending picture to TV.
I just fixed mine with the same problem. Apparently, the HT-R667 and 606 receiver that comes with 6100 has a problem with the HDMI board. Onkyo wanted $500 dollars to fix it, costed me $16.
Here's how to fix it.
http://www.highdefforum.com/high-definition-receivers-recorders-players-tivos/121956-repairing-onkyo-htr667-aka-606-a.html
and the youtube vid:
http://www.youtube.com/watch?v=gj0x5S9ez5U
Good Luck!
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