My Blu-Ray DVD player is connected to the AV Receiver with HDMI cable.

The newer players have an HDMI port on the back. If your AV receiver or television has an HDMI port, connect the player to the AV receiver or television using an HDMI cable, often sold separately. If it's conencted to your television, select the menu option on your television and under "source", choose the HDMI input. Turn on the player and you should see the DVD player logo if all is working properly.

Its something wrong in the cables connection try to reconnect them! And make sure that the connection is perfect according to manual then try it. It should work nicely. Moreove HDMI has great sound + picture effect.

What brand/model is the receiver. Some have a function where you can select if the audio is passed through to the tv, or output from the receiver's speaker jacks.

onkyo receivers have a problem, see

http://www.hdtvsupply.com/hdmi-cable-booster.html

Connect HDMI cable from the rear panel of the blu ray player to the DVD/IN digital section, labeled as "HDMI/IN" on the rear panel of the receiver.

If there are red and white RCA jacks on the back of the BR player and on the receiver you should be able to get sound. The same as your VHS.

Yes, you can connect the HDMI Cable from the Blu-ray Player to the TV directly and then, connect the Digital Optical cable from the Blu-ray Player to the Receiver.

I had the same problem unitl I read the manual a little more carefully.

I found that ALL connections through my AV receiver had to be identical. I was using component connections with analog connections.

Since I switched to all HDMI connections (cable box to AV receiver, DVD to AV receiver and AV receiver to TV) all is fine.

Hope this helps.

Is Yamaha HTR-640 a receiver? Try HDMI from PS3 to receiver or Sony HDTV. If HDMI from PS3 to receiver the you need and HDMI from receiver to out Sony HDTV. You could connect everything to receiver and HDMI out to HDTV. You can not have an HDMI cable AND an optical cable coming out of the PS3, only one or the other.

What port do you have the HDMI from you BD player into on the 510. If you have it on the DVD port then fiber optic will do you no good, the DVD HDMI only supports digital coax, the Video2 HDMI only accepts fiber optic, and there is an extra fiber optic for the Sat input. If your BD player does not have digital coax out, or if you dont want to buy another cable, just move the HDMI from DVD to Video2 on the 510. I am willing to bet you have the BD player plugged into the DVD HDMI port and the fiber optic cable from you BD player to the Video2 fiber input.