HT4189 - Troubleshooting - Not working / no sound / not connected


Keywords: HT4189, not working, no sound, not connected, quit working, stop working


IMPORTANT NOTICE: Pls note that if you switch audio source, e.g. from Netflix to Cable, TV will reset the audio settings. SO you need to RE-DO the TV audio settings again.

Note: If you go through all the following troubleshooting but still no sound, please send the following pictures to us for double check.

1.The screen of the transmitter to show its status.

2.Your TV sound settings show external speaker / optical out / headset.

3.Your TV sound settings show PCM (only if use digital / optical cable).


Before getting into it, take a look at this VIDEO GUIDE, and try setting up again.

If it still can't work, please follow the steps below and let us figure out what exactly is wrong: 


1. Take a look at the led indicators on your Audikast transmitter and AS9S headphones. Are both of them lit SOLID BLUE?

If NOT, go to HT4189 - Troubleshooting - Fail to reconnect.

If YES, go to 2.

2. Did you connect your Audikast transmitter to your TV? There are 3 ways to do it, please only use ONE.

Method 1: AUX                   Method 2: RCA                       Method 3:OPT



3.Adjust your TV settings

Note:The below setion is only a general idea of what it may look like; different TV brands will have different menus.

3.1 For AUX: 

Adjust your Speakers setting to "Headset"

3.2 For RCA:

Make sure you only use the RCA ports labeled "AUDIO OUT," other ones won't work! Ans adjust your Speakers setting to "External speakers"


3.3 For OPT:

Ensure your TV audio format is set to “PCM” or "audio out/optical"or "DOLBY/DTS" is off, Bluetooth adapter does not decode Dolby/DTS;And adjust your Speakers setting to "External speakers"

PCM.png    external_speaker.png

If you only experience no sound while using HT4189 for Netflix/Amazon Prime, pls go to this link:


IF your answers have all been YES and set up properly so far yet there's no sound, it's time to call your TV manufacturer! Not sure what to ask them? Don't worry, we've got your back! please see below:

If you're using AUX connection: How can I make the TV audio come out through headphones?

If you're using RCA connection: How can I set my audio out to "external speakers"? How can I make the TV audio come out through RCA output?

If you're using OPT connection: How can I set my audio out to "PCM" and "external speakers"? How can I make the TV audio come out through OPT output?


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  • Avatar
    Dennis Heatherington

    A little box A and B is hooked up to the optical cable but there is no light of any sort on the box the headphones I've cleared their history I get the red blue flashing constant but I get nothing out of the box with the A and B I've tried holding and be together for 10 seconds still no light whatsoever I have a second set in my other home and they work just fine so I know a little bit about how they work but this set doesn't seem to want to pair at all