Question about Sony STR-DE597 Receiver

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Can't unlock the DVD function on the receiver so get no sound.

When I put in a DVD I put the receiver to the DVD function however It comes up saying 'unlock'. I then get no sound only picture although on all other functions there is sound. I don't know how to unlock the DVD function?

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You need a coax wire from DVD coax to Receiver Coax input. Don't put the red and white wire from DVD to Receiver because you don't need it. Thats what the coax wire those.
try and see if that works.

Posted on Feb 01, 2009

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I have a Pioneer vsx-919 receiver an an LG TV. The problem is: Using an HMI cable I have hooked my cable box to an in port of the receiver, then put a an HMI cable from the out port of the receiver to an...


Assuming a single cause we need to isolate which single device is involved in all these failure modes.

"It comes out of both speakers" on what - the TV?

You don't say how the DVD interefaces with the receiver. Is the DVD feeding digital multichannel audio out at that time? Many DVD's are simple stereo until the show actually begins. You know that.

Try running an HDMI connection straight to the TV from the cable box. Result?

Substitute the other HDMI cable for the first one. Result?

If either one does NOT work satisfactorily we may have part of the problem isolated.

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Attach the HDMI out of the receiver and IN to the TV and the HDMI from the Cable Box as before. Same result?

Can you try using Component Video out of the receiver to the TV just to change something in the equation? On my rig I 'see' no difference between HDMI and Component Video on my HDTV. A change in the result may help to isolate or work around part of your problem.



My $.02...

I'd recommend you go for minimal receiver involvement in the video side other than to send composite video to the TV from "Monitor Out" so you can set up and manage the receiver.

You can also send Cable- or Sat Box basic analog audio directly to the TV if it has inputs for audio. That way if you just want to watch the news or weather you don't need to fire up the Pioneer.

Your video sources (DVD, BD, Cable/Sat) will suffer fewer video anomalies if you send their best video directly to the TV and their best audio directly to the receiver. That way everything is handled only once by the best electronics you have for each function.

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1 Answer

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For this Sony, you have to use separate audio cable(s). Either optical in BD or Digital Audio in DVD (single coaxial cable will do the trick) I bet the display says UNLOCK. I had the same problem, very dumb.

Good day!

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I have the same problem. All of a sudden no sound through my TV connection (but through the DVD connection the sound was still working). I changed the connection from video 1 to video 2 and got the sound back. It is not a real solution, but a practical one :-)

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