Optical cable no sund - AVS Forum
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post #1 of 11 Old 05-27-2013, 09:54 PM - Thread Starter
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I am new to the site.

I just recently renovated my TV wall and hid some cables inside the wall, carefully reconnected everything and it worked fine. Then, after about a week, the optical cable connection stopped working.

I have a Samsung 8000 series 60 inch TV and a Denon AV 1612 receiver, the signal is connected to the TV and an optical cable to the receiver. I have triple checked everything and the connections are fine, the audio test is fine, the problem is with the optical cable input. I have read the manual many times and set up the optical with the sat/cable input, but the info on the amp reads analog, and I dont get any sound.

Any ideas? Could the optical cable be damaged? Any other troubleshoot tip before buying a new cable? The problem is not the price, it is that the cable is buried behind a tile wall, and the way I had to set it up did not leave a whole lot of room to easily manage changing that specific cable.

Thanks.
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post #2 of 11 Old 05-27-2013, 11:04 PM
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Why use the optical cable. Everything should go through your avr, with a single hdmi cable from the avr to tv.
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post #3 of 11 Old 05-27-2013, 11:19 PM - Thread Starter
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It is a longnstory, but the short one is that the hdmimcable comes from a different room and will not reach the receiver, so I could if I buy an hdmi extension cable.
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post #4 of 11 Old 05-28-2013, 02:47 AM
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Each AVR input can accept several different types of audio. The default setting for an input is Auto, meaning it will process whatever type is sent. But, you can limit an input to only accept one type. If "the info on the amp reads analog" for that input, you may have pressed a button on the AVR telling it to only look for analog audio. I have an older model Denon. On my receiver there's a button called Input Mode that cycles through the choices.
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post #5 of 11 Old 05-28-2013, 03:07 AM
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Optical cables are pretty fragile. They arent meant to be stressed a lot and buried in walls. It carries a very precise laser beam so if it gets kinked or stretched or exposed to any kind moisture then youre done. I would look into an HDMI extender. You can get one at Amazon for about $2.00.

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post #6 of 11 Old 05-28-2013, 07:18 AM
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Quote:
Optical cables are pretty fragile.

This is TOSLINK, it's plastic.
Quote:
It carries a very precise laser beam

No, it carries incoherent light from a red LED.
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post #7 of 11 Old 05-28-2013, 07:31 AM
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Connect all of your source devices to the receiver and then run an HDMI cable from the receivers HDMI output to the TV.

Surely the receiver isn't that far from the TV. You can buy 15-foot HDMI cables. Check Amazon.
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post #8 of 11 Old 05-28-2013, 07:32 AM
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Quote:
Originally Posted by lespaul1964 View Post

...and it worked fine. Then, after about a week, the optical cable connection stopped working..

If it worked for a week, then stopped working, perhaps:
You added stuff to the wall and compromised the optical cable (nail, screw).
Something changed in the receiver, such as a setting (Dolby, PCM, DTS....)
Moved something and the connector came loose of kinked.

How long is the optical cable?
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post #9 of 11 Old 05-28-2013, 09:28 PM - Thread Starter
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Still not working, I am pretty sure it is the optical cable. My thought is to buy an hdmi extension cable in order to connect it to the amp, as it is I am about 4 ft short. I am pretty sure that will solve it. Thanks for the input.
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post #10 of 11 Old 05-28-2013, 09:35 PM - Thread Starter
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Just to clarify, i have a playstation 2 and a cable box connected to the amp with an hdmi out to the TV, this is fine though I have not tried the cable yet. The SAT is coming from another room, quite a ways, and the cable reaches to the TV but does not reach the amp. I came up with the idea of the wall and did not think it through very well, and a couple of cables ended up not in the most ideal place. Tks.
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post #11 of 11 Old 05-28-2013, 10:21 PM
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Why do you suppose the display on your amp shows analog? That's not something that would be caused by a bad optical cable.
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