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-   -   AV sound system problem - help? (http://forums.pelicanparts.com/off-topic-discussions/1082533-av-sound-system-problem-help.html)

wdfifteen 01-05-2021 08:11 AM

AV sound system problem - help?
 
I have a 3 year old LG flat screen tv and a 10 year old Onkyo receiver.
Ethernet from my router to the TV for input.
An optical cable from the TV to the receiver for sound out.

The sound stopped working a few days ago. It was working Friday night and Saturday morning it wasn't. I checked all the settings and figured there are only 3 components and the cheapest is the cable, so I got a new cable. It didn't help immediately, but we were watching TV (using the TV's internal speakers) a couple of nights ago and it spontaneously started working. The next day it was dead again. So it's down to the TV or the receiver. I don't know how to determine which it is. When I unplug the optical cable from the receiver I see a red light. I don't know if that's actually a sound signal or something else.
Anybody have any advice on how to get this thing working again?

stevej37 01-05-2021 08:29 AM

Does your LG have rca outputs for sound also?
If so..try those instead of the optical.

matthewb0051 01-05-2021 08:44 AM

On some receivers you can dictate which output (vid 1, vid 2, CD, and others) are linked to the optical input. See if you can reconfigure and use another output.

The light in the optical cable is it working. Or at least being on

Cajundaddy 01-05-2021 09:21 AM

Possible dirt/lint in the optical cable input or same in the selector switches. Power off> clean connections > contact cleaner into selector switches > air dry > retest.

serene911 01-05-2021 09:31 AM

Had a similar problem on a tv recently no sound. Couldn't figure it out. Ended up unplugging
the tv let it sit for a few minutes and plugged it back in. Solved the problem,it must have
reset some internal configuration.

cabmandone 01-05-2021 09:57 AM

I like Steve's RCA out idea if the LG has rca in for audio. One other thing is, does the Onkyo any HDMI's where you could put your firestick or whatever streaming device you're using through the Onkyo and then out to the TV HDMI?

wdfifteen 01-05-2021 11:01 AM

The LG doesn't have RCA jacks, just the optical. I'm not using a streaming device, it's just ethernet from the router to the TV.
I'll check for dirt in the optical ports. The thing about it not working, then suddenly coming on and then not working the next time I turn it on sounds like it could be dirt somewhere.

stevej37 01-05-2021 11:05 AM

This is prob a long shot...any chance your LG and Onkyo both have HDMI ports?

wdfifteen 01-05-2021 11:30 AM

Quote:

Originally Posted by stevej37 (Post 11167477)
This is prob a long shot...any chance your LG and Onkyo both have HDMI ports?

They do. When I had Direct TV the DTV box fed the Onkyo through HDMI, which then went to the TV. I think it just passed through.

stevej37 01-05-2021 11:32 AM

Use that....the hdmi carries audio and video.
You'll prob have to change the input choice on the LG

flipper35 01-05-2021 12:00 PM

Quote:

Originally Posted by stevej37 (Post 11167516)
Use that....the hdmi carries audio and video.
You'll prob have to change the input choice on the LG

If he is using the Ethernet cable as his "tuner" that won't work.

stevej37 01-05-2021 12:07 PM

^^^ switch that to the Onkyo?

cabmandone 01-05-2021 12:32 PM

You'd need HDMI out on the TV to feed the Onkyo.

cabmandone 01-05-2021 12:33 PM

Quote:

Originally Posted by flipper35 (Post 11167553)
If he is using the Ethernet cable as his "tuner" that won't work.

I'm taking it that he has a smart TV with Hulu, Sling... whatever so no need for the streaming device that he could otherwise run through the Onkyo first.

Gogar 01-05-2021 01:11 PM

If you can’t get the optical to work and your tv has an HDMI(ARC) port then it will be able to send audio to the receiver through a HDMI cable, even if you dont need or care about the video part of it.

dad911 01-05-2021 01:19 PM

If the Onkyo receiver & speakers are only used for better sound from the TV, consider swapping for a soundbar......

Even my samsung soundbar integrates well with a TCL TV. Volume, on/off all automatic with TV remote.

cabmandone 01-05-2021 01:26 PM

Quote:

Originally Posted by dad911 (Post 11167668)
If the Onkyo receiver & speakers are only used for better sound from the TV, consider swapping for a soundbar......

Even my samsung soundbar integrates well with a TCL TV. Volume, on/off all automatic with TV remote.

Now yer talkin! Ditch that old crap and buy a good center channel and two bluetooth towers for the rear channel!
I should take your advice. What number should my wife call to thank you? :D

flipper35 01-05-2021 02:03 PM

I will take a proper set of speakers and sub any day over a soundbar.

wdfifteen 01-05-2021 02:17 PM

I concluded that the receiver is toast. I blew out the optical ports and went through the TV out settings and the AV in settings and everything is set up fine. Nothing I do seemed to work. I ordered a new receiver and we'll use the existing 5 + woofer speaker system. The new receiver has ARC sound (our busted one doesn't) and the TV has an ARC HDMI port, so one less wire in the rat's nest behind the TV. Plus, the LG "Magic Remote" is compatible with the new Onkyo receiver, so I can ditch a remote.
Thanks for the suggestions all. You guys are a treasure.

cabmandone 01-05-2021 02:28 PM

Receiver doesn't need the ARC. Just the HDMI in If I'm not mistaken.

Just looked. I am mistaken! ARC to ARC= good ARC to non ARC hdmi = no bueno


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