No audio if raw mode

[ClaudioG]

My Z9X is connected via HDMI to the Yamana RX-4A4 amp.
It worked perfectly until yesterday.
Today it only showed the video without sound.
I changed the HDMI cable but the problem persists.
I have agreed that if I change the audio output from RAW to LPCM 2 the audio will be heard.
I tried using the optical output with the same result as HDMI (RAW no audio, LPCM2 yes audio).
Do you think it's a Zidoo hardware problem?

Thanks for your attention.

[futeko.com]

Try resetting the amp. Either a factory reset if it can do that or unplug it and leave for a few minutes before turning it back on.

https://manual.yamaha.com/av/20/rxa4a/en-US/319673227.html - 'Video initialization'.

If the Zidoo can output video+PCM over HDMI then it's extremely unlikely that there is a hardware problem. Much more likely a connection/handshaking problem with the amp.

[ClaudioG]

Thanks for your attention!

If I connect the Zidoo directly to the smart TV via HDMI the result is identical to that described above.

[futeko.com]

I still think it a config / handshake type problem between Z9X and the amp.

Try resetting the Z9X completely. IMPORTANT, MAKE SURE YOU HAVE A Z9X AND NOT A Z9X PRO BEFORE DOING THIS! Z9X PRO USES DIFFERENT FILES:

Reset box using emergency firmware: https://www.zidoo.tv/Support/support_guide/guide_target/TFlGi84dAUbeq7k9e%5Bld%5D3ulg%3D%3D/guide_faq/raXr0bxKWKM%3D.html

Followed by update the latest firmware using box menus: http://forum.zidoo.tv/index.php?threads/beta-version-v6-4-65-for-z9x-z10-pro-z1000-pro-uhd3000-v6-7-85-for-neo-s-neo-x-neo-alpha-release.97215/

[ClaudioG]

Done.

Turn off the amp for 5 minutes and... all OK 

Thanks