Fault finding optical sound connection

Soldato
Joined
27 Dec 2006
Posts
2,845
Location
Northampton
Long story short I'm having to use the optical out of my new LG TV as my receiver does not have HDMI 1.4 to utilise the ACR.

I found an optical cable and for testing purposes I've plugged it into my Optical out from my AV receiver (I see a red light emitted from the port) and looking at the other end of the cable I dont see a red light.

I tested the cable on my desktop computer and again don't see a red light emitted from the other end of the optical cable.

Is my cable faulty or am I missing a step?
 
Soldato
Joined
24 Nov 2006
Posts
4,922
The Av receiver surely wouldn't transmit so wouldn't send a light? EDIT just saw optical out please ignore! Is there no red light when it's in the TV end? Also is it enabled on the TV?
 
Soldato
Joined
4 Feb 2018
Posts
13,162
Long story short I'm having to use the optical out of my new LG TV as my receiver does not have HDMI 1.4 to utilise the ACR.

I found an optical cable and for testing purposes I've plugged it into my Optical out from my AV receiver (I see a red light emitted from the port) and looking at the other end of the cable I dont see a red light.

I tested the cable on my desktop computer and again don't see a red light emitted from the other end of the optical cable.

Is my cable faulty or am I missing a step?
Just checked my end of the optical cable and I have no light either.

Edit: Although I have just turned my TV on and there is a light now. Duh!
 
Soldato
Joined
12 Jul 2007
Posts
7,867
Location
Stoke/Norfolk
If optical out is working from the source then it should show at the end of the cable.

Faulty cable.

Yeap a faulty cable.

I've been using Optical cables since 1998-ish (minidisc players) up to today (TV to soundbar) and the tech hasn't changed since so, if you can see a red light in the output connector before you plug the cable in, then there should be a red light at the other end of the cable after it's plugged in, if the cable and the plugs are good.

The cables themselves are pretty sturdy considering so it's more likely to be a blockage (dirt etc) in one of the plugs rather than an actual breakage in the cable.
 
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