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S/PDIF optical out problem

S/PDIF optical out problem
« on: May 14, 2015, 05:29:32 pm »
Hi every one
I have for a while now a GA-Z77-D3H rev 1.1 with intel core i5 3570K under windows 7 64.
Problem is  I am not able to make the optical S/PDIF out work : I plug an optical cable in the motherboard and at the other end I plug the cable into my audio amplifier : nothing happens. The VIA HD audio deck does not detect that the optical cable is plugged (when I plug a stereo cable into the front HP the green circle enlights, when I plug the optical cable into the motherboard, nothing enlights on the audio deck). When I choose S/PDIF out as default device I can see the green bar mooving but still nothing out from the amplificator. My amplificator is working because when I plug my TV on the same optical input it works. What is wrong please. I need help. Thanks in advance. Patrick