<font color='#000000'>Have you double checked the settings in your setups?
Most dvds ship with the dts feature turned off. Go into dvd player's setup, and set the digital output to bitstream, not pcm.
Then go into your receiver's setup menus, and slowly, step by step (with manual), go through complete setup. You will need to activate inputs for digital or analog, whichever you have connected, for the source you have connected to that input.
If you have a subwoofer, you will probably have to turn it on, in the receiver's setup too. With a sub, set your other speakers to small. That will send all of the LFE (bass) signal to the subwoofer. Without a sub, set your speakers to large.
You said in first post, you have a digital cable box? If so, you'll run a digital coax or optical cable (whichever output box has) to the DBS/TV audio input on receiver. Also, if it's a Digital box, it should have an s-video cable out to s-video input for DBS/TV on receiver. If it's not digital, run red & white rca audio cables out from box to DBS/TV composite inputs on receiver, and yellow rca video cable out from box to DBS/TV composite video input on receiver.
For dvd player.......run digital coax or optical cable (whichever player has) out from dvd to the dvd digital audio input on receiver. Then run s-video cable from dvd output to the dvd s-video input on receiver.
Then run an s-video cable from receiver (monitor out) to video 1 input on tv. If you had to use the red, white and yellow cables from cable box, and you don't get a pic from cable station, you may need to run the yellow cable from the cable box to the tv, instead of to the receiver.
Now remember.......you won't use channel 3 on tv to watch cable or dvd. You'll need to set the tv's input on video1 or 2, depending on the inputs you use on the back of the tv. The ONLY reason you use tv, is for video. Turn sound completely off on tv. Control sound from receiver's remote.
I'm not familiar with a Yamaha, but my friend's Denon is set on 7 ch. stereo, when listening to 5.1 movies. So, that's ok. With this setup, and as long as you did the receiver's setup right, you should get pro logic from MOST of what you listen to, that's not 5.1 surround.
I think your problems are coming from the receiver's and the dvd's setups not being quite right. I know this stuff is confusing, but if you take it slow and go STEP-BY-STEP, you'll get it right and be proud of yourself!
Good luck! Let us know how it goes............
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