There are only 33R resistors on HDA lines, I already check all of them many times....

Now I can confirm that processor (pch) dont communicate with realtek chip. Probably I should reball the processor but currently I have no proprient equipment/tools for doing this, so fixing this MB will be postponed for future.

On new motherboard I see a lot of packets on HDA_CODEC_SDOUT before loading windows desktop I not checked behavior on linux as I am completely confident in diagnose now.

thanks a lot to all responders

thanks, I really forgot to check vendor and device ID. Only Intel (8086) audio device is present in Windows and Linux



yeah, I know, It from local slang. As we call whole IC as "processor" or "combined processor" it is much closer to CPU abbreviation than to PCH



Linux must found realtek and load realtek kernel module, but realtek had not appears in device list​



I will try to check HDA signals on new motherboard tomorrow...

I tried and nothing happens.
Should be some communication between cpu and realtek chip.

I've ordered another motherboard will check behavior (communication) later....

Hello everyone

I need some advice

boardview and schematic
[URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/3332066-cal50-dal10-la-f116p-rev-1-0-a00[/URL]

Bios updated to latest version (updated via bios update utility).

Windows: no sound, all drivers installed, device manager shows "High Definition Audio Device" without any error, there is red cross on sound icon, click on troubleshooting says that probably there...

Salutations

I am from Ukraine, I am 43y old and I am programmer with greater than 20y expirience, but want to learn to repair electronics especially laptops,TVs,power electronics etc.

My father is an engineer on control and measuring devices​, so I in electronics almost from the cradle
My father can repairs almost everything type of electronics home, industrial, etc.
In my childhood I was always surrounded with something DIY stuffs made by my father. That was from some thing very primitive like xmas light controller to ZX Spectrum PC.
Currently...