Acer Predator Triton 500 pt515-51 Speaker connector on motherboard

Hello!

I have a speaker sound issue (no sound) and I appreciate Your help on this one.
Basing on my experiences before, it could only be a sound card driver issue, but this time I have reason to suspect something else.

That is because I upgraded my ram and there is a possibility that I missed to plug something back to it's place.
Everything else is working as it should, only the speakers are muted.

I closely watched the disassembly videos available out there and took all my time to do everything in the right way, with all the ESD protection measures in mind.

Now I'm planning to upgrade my NVMe memory too, so I could take the opportunity to check that all the ribbon cables etc. are connected in a proper way.

It would be very nice to have a still picture of the motherboard with all the connectors visible and indexed if possible.
All I have found are mobo schematics so far, but that apparently isn't that helpful for me.