That's a ZVOX sound box - ZVOX Televison & Video

It needs resetting

https://www.google.com/search?q=ZVOX+AV155+sound+bar+speaker+8888+error

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I have never heard of this brand of TV

They to check the menu of the TV is there is any option to activate the Digital out or is there is any setting which allow you make a selection between internal speaker or external speaker. if its there the make the setting as external speaker .
If you wish to get some details; check the site linked here. Pull up older posts.

http://electro-medical.blogspot.com/

I am the same boat. Just bought a bigger tv and my zvox doesNOT work now

Check whether the audio is muted by accidental press at remote control button. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
http://electro-medical.blogspot.com/

Place the unit in learn mode: http://www.zvoxaudio.com/mas_assets/theme/zvoxnew/documents/ZVOX580_LearnRemote_Guide.pdf

Try to rule the set out with a DVD etc connected directly to the set. Also if using a box of some type to the receiver--unplug it and the receiver and power back to let them reboot---short of that most shops can check for a small or no fee the receiver to see if it is the issue.

What type of cable are you using to connect your ZVOX system? Are you connecting your system directly to your TV? In order to solve your issue as quickly as possible I would encourage you to call our toll free number.
(866) 367-9869 We can troubleshoot over the phone and get you up and running in no time. Thanks.

- Joe

ZVOX Audio - Great Sound, Made Simple
www.zvoxaudio.com
866-367-9869

Hi,
1. Make sure it's connect to "Audio Out" on your DirecTV box.
2. Yes, the blue light should be on while unit is on an received a signal.
3. Check a second set of audio cables, just to be sure.
4. Toggle the Auto On/Off button on the ZVOX remote.
5. Make sure you've turned up the volume via the ZVOX remote.
If all these fail, contact us at zvoxaudio.com.
Tom

Hello ZVOX Owner,
The hiss you hear is generated by the analog audio output of the cable box. The best way to eliminate this hiss to use the digital output of the cable box. The preferred way to do this is to connect the digital audio output of both your cable box and your PS3 to the your TV (I presume your TV has two digital audio inputs.)
Your TV has a digital audio output. You should connect the digital audio output of your TV to the digital input of the ZVOX.
This should reduce or eliminate the hiss and provide convenient video source selection via the TV.
From Fred P. at www.zvoxaudio.com
[email protected]