My iMac 27"(late 2009), Audio in/Optical digital audio out port, stopped recognizing my new Bose speaker system, previously working through that port. I tested the speaker system through my iPhone, and it works fine. I hooked it up to the Headphone out/Optical digital audio in port, and it works through that port also. I did a computer restart, I also checked all wiring and did a system repair on the computer. I also restarted the computer in mode where I could use the system utility, and the computer still did not correct the matter, and it reported everything as being "ok". I wented into "sound", through system preferences, and the computer does not recognize anything I plug into the Audio in/Optical digital audio out port. When I plug the speaker sysytem into the headphone out/optical digital audio out port, it does recognize the Bose speaker system as being "headphones".
Reading through a lot of forums, I hear everything from compatibility, to the port being stuck, and on and on. Since the port was working before, and just quit working one day, I wonder if there is a capacitor or fuse or some type of similar thing is blown, and causing the port to be unfunctionable. Maybe the port went bad, but before this time, I had never used it, and the computer does not move around, and I never plug in and pull wiring out unless needing to, and that being rare.
Here is a link to Costco, where I bought the system, and the exact system I have, if this is any help: http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=bsd&cs=04&sku= A4092931&ST=pla&dgc=ST&cid=262075&lid=4742361&acd=1230980794501410
By the way, I am running OS X Mountain Lion (10.8.5). I upgraded to Mavericks about a month ago, and expeirienced a number of issues, and had to take my iMac into Apple. Talking with the tech, I decided to wait for a while more before I upgraded to Mavericks. I try and keep the computer maintained.
If any of you have any ideas regadrding wear and tear, and fix I can do, etc., besides having to take my computer into Apple? Thank you, and potentially all of you, for your time and effort in helping me with this issue. Thank you kindly.