I just try the old plug in transmitter side and use my phone's camera to see if it's outputting. If you have an old optical cable that has been bent a few too many times, that can cause issues.
My Pc's onboard audio's optical output stopped working
My pc has an old Gigabyte X38-DQ6 motherboard. For years I have been using it's(has a Realtek High Definition Audio chipset) Spdif optical out(toslink), connected to a Pioneer VSX-519V-K a/v receiver.
A few days ago my dvd-writer went bad(mostly not recognizing media though rarely it recognized, I think it's normal for a 4 year old optical drive).So today I bought an internal bluray writer for my pc.Before installing it into my desktop pc,I removed all the cables of course.Then,after installing it,I reconnected every cable but I had problems connecting the optical toslink cable as usual,I am not sure why but most of the times I had trouble connecting it to pc, finding the right position for optical toslink cable has always been difficult for me.(though it was always easy to connect that toslink cable to my a/v receiver)
Whatever, I ran the pc, I put an audio cd into my new bluray writer, but I heard no sound.I ran Winamp and tried playing a mp3 from harddisk, still no audio.Checked the cables,tried disconnecting-reconnecting again and again(trying with different cable-insert positions) still no audio.On the a/v receiver's display it seems there is no signal.Then I tried using an analogue cable , audio worked without problems.
I looked inside the Spdif port and it seemed there were a few broken little pieces.I took a few pictures of the Spdif port :
I don't think there is a problem with the a/v receiver or toslink cable because I tested them with my satellite receiver and it worked without problem.Another note: Under audio settings on Windows 7, "Realtek Digital Output" is the default one as usual.
Do you think my motherboard's SPDIF toslink port got broken or maybe I did something wrong while installing the bluray writer and somehow cause optical audio to got corrupt?