When your smart TV leaves you dumbstruck


When your smart TV leaves you dumbstruck

Sometimes getting the best sound out of your smart TV requires a magic touch.

When you hit the couch for movie night, great sound is just as important as a great picture. Rather than rely on your television’s two built-in speakers for stereo sound, you can step up to a home theatre system which pumps out cinema-like surround sound.

For all the benefits of smart TVs and the streaming revolution, setting up surround sound was much easier back in the days when movies came on shiny discs.

First, you’d plug your DVD/Blu-ray player into your home theatre amplifier using a single HDMI cable (replacing the fist-full of audio and video cables required back in the analogue dark ages). Next, you’d plug your amplifier into your television using another HDMI cable. No mess, no fuss.

Setting up surround sound on a smart TV used to be much more straightforward, with no remote required.

Setting up surround sound on a smart TV used to be much more straightforward, with no remote required.

Like magic, the amp passed the picture from the disc player to the television, while sending the sound to the various speakers around the room.

The rise of smart TVs with built-in streaming services means we no longer need to rely on a cabinet full of disc players and set-top boxes to watch movies.

That’s convenient until you want to send the surround sound from Netflix, playing on your smart TV, back to your amp. Originally, this required a separate digital optical cable, but things supposedly got easier with the HDMI ARC standard and later eARC. It lets HDMI cables act as a two-way street, sending the surround sound from the television back to the amp when you watch Netflix.

That sounds like a great magic trick, but HDMI ARC is one of those supposedly universal standards which the late, great Steve Jobs would have dubbed “a bag of hurt”. It’s always been a dark art, as every amp, television, player and smart TV app behaves slightly differently.

When connecting my LG OLED smart TV to my Yamaha home theatre amp via HDMI ARC, the amp often fails to recognise the sound coming from Netflix until I switch the amp to another input and then back to HDMI ARC. Other times, the television or Apple TV wrestles control of the amp and changes to the wrong input.

Rather than constantly reach for my amp’s remote to fix this mess, I’ve programmed extra steps into my Logitech Harmony universal remote. After it’s switched on all my home entertainment gear, it sends extra commands to the amp to remind it of what it’s supposed to be doing.

It’s even worse with Amazon Prime Video on my smart TV. Watching Star Trek: Picard, every time I pause the video the sound cuts out. Once again, the fix is to switch the amp to another input and back to HDMI ARC – at which point it miraculously re-discovers the sound.


Abandoning HDMI ARC for an old digital optical cable seems like the best solution, but it creates a whole lot of new problems – often leaving me with underwhelming stereo sound.

In the end, I decided it was easiest to stick with HDMI ARC and customise a button on my universal remote to fix the broken sound when watching Amazon. With a single press it switches the amp to another input and back again. It’s an ugly compromise, but that pretty much sums up HDMI ARC.

To add insult to injury, even when sound does work, Amazon regularly insists on changing the subtitles to German – a problem watching Star Trek: Picard as my Romulan is a little rusty and I need those English subtitles. But that’s a fight for another day.

It’s tough to say where the blame lies for all my audio woes – between the amp, the television or the streaming apps. For now, it seems I’m stuck with the curse of HDMI ARC in my lounge room.

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