Sorry to ruin your post here but im having similar problems with a system of ours. We have a sony tv along with a sony dvd that has 7.1 surround. We receive our cable tv directly into the tv but want to send it to the dvd and out of the sony speakers. The speakers work fine when watching a dvd so theres no problems there. The dvd pics up that the cable is on as it displays it on the device. They both also appear to detect one another etc etc and we have set the tv to send sound to external speakers.
Unfortuntely the sound doesnt come out. We have only connected the two via dvd cable but nothing. I have tried to connect composite but it only pics this up as a video connection not composite.
There are 2 sound outs for the tv, a 3.5mm jack, a digital audio out (optical) but there are no corresponding cables for audio input in the dvd player.
Here are the various ports, photos of both including model numbers are attached in pictures.
On the TV we have
Digital Audio Out (optical)
For compoent in
(Mono) L audio
there is also a pc connector in and sound input for this too most or a component like cable
on the side
we have usb port, hdmi 2 port and a 3.5mm sound out jack
on the dvd you can see the port in the attached picture, there appears to be only two audio in ports. It appears that they are not compatible with one another. I actually thought dvd sould send the signal back as it should be bidirectional.
its driving me nuts so any help would be appreacited.