I have connected my pc to my lg tv via vga cables. my tv etc all go through my onkyo ht-r380. I can get pictures from pc to tv but no sound.
Vga doesn't have audio in the cable you need a second cable for the audio!
SOURCE: No sound from digital cable thru AVR3200 after adding HDTV - DVD plays fine
you need a digital coax cable and then connect it to 6.1 also the digital cable type is not a coomon type so check that also
SOURCE: Onkyo TX-SR606 getting no sound from HDMI sources
Not sure if this is your fix, but I had what I thought was the same problem. I played with my Onkyo quite a bit ensuring the correct assignments for HDMI, audio and all that stuff. Turns out I neglected to make sure the output devices were properly assigned. Many devices aren't default to output sound over HDMI. I changed the audio out settings on the cable box to HDMI and suddenly the Onkyo worked great. I know, I'm an idiot for not checking that in the first place, but maybe someone out there is having the same trouble as well.
SOURCE: Onkyo TX-SR705 - No Audio - Flashing HDMI
The posabilities is power amplifier on your reciever is bad,
replays reciever or repair it.More likely this is IC amplifier located on the main board of the reciever
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: connecting TV and DVD for surround sound
HDMI is fantastic in that's the only thing you need to plug in to get what you want.
You'll need two of them however. Plug one end of the HDMI cord into the HDMI "OUT" on the dvd player and the other end of it to the receiver..labeled HDMI 'IN' Then, take the second cord and do that step with the receiver back to your big screen...HDMI OUT to IN.
Surround sound from TV sources only needs a L&R audio cable connected to the receiver input labled TV or MONITOR audio IN. Unless you'd like 5.1 dolby digital or DTS from the television that requires devices that you haven't mentioned owning. In that case you will be able to get Dolby ProLogic and Pro Logic II from stereo broad casted sources on your TV.
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