Raspberry Pi 4 – No HDMI Audio on Older Telefunken TV

[andreaerre]

Hello everyone,

I’m looking for help to solve a problem with my Raspberry Pi 4.

Until recently, I was using a Raspberry Pi 3 connected to a Telefunken Full HD TV, and both audio and video worked perfectly.
Now I’ve switched to a Raspberry Pi 4, which has micro HDMI outputs, and I’m experiencing audio issues.

I’m using a micro HDMI → HDMI cable, but when I connect it to the TV, no sound comes out.
The operating system installed is Recalbox, and in the audio settings menu, there’s not even an option to select HDMI output.

I also tried using a micro HDMI → female HDMI adapter with the old standard HDMI cable that worked with the Pi 3, but the result is the same: video works, audio doesn’t.

Interestingly, if I connect the same Raspberry Pi 4 to a Samsung 4K TV, both audio and video work perfectly.

I’ve tried editing the config.txt file on the microSD by adding these lines:

hdmi_force_hotplug=1
hdmi_drive=2
hdmi_group=1

…but it didn’t work: on the Telefunken I still can’t hear anything, and Recalbox doesn’t detect HDMI audio.

Has anyone experienced the same problem or knows how to force HDMI audio on slightly older TVs?
#tv #audio

Thanks in advance!