Both Front Panel & On-board Audio Not Working on Asus Z97 Sabertooth Mark 2

[willowen100]

Hi everyone

I wanted to plug in my Hi-Fi speakers today and went to use the 3.5mm jack sockets on the back of my motherboard and realised they're not working. I've literally tried everything to get them to work. This includes, re-flashing the BIOS, installing the Realtek HD audio drivers, using the Windows generic drivers, using Linux Ubuntu's alsamixer to adjust the volumes in a non Windows OS and of course the leads and they speakers are perfectly fine as they work on other equipment. Both the input and output sockets are not working, but Windows and Realtek's HD Audio suite detect when the jack is plugged in and out.

Please could someone shed some light on this, especially those who have similar Asus motherboards.

Many thanks

Will

 

[romirez]

Wish to measure resistance or voltages? Can guide.

 

[willowen100]

Wish to measure resistance or voltages? Can guide.

Yes please

 

[romirez]

Do you have multimeter?
Look for Audio codec chip ALC1150 at the corner of board for now:

 

[romirez]

There are two points for measure.
Resistance must be over 1k Ohm.
Voltages must be near 5V and 2.5V

 

[willowen100]

Do I test the connectors on the back of the circled components you circles in the picture? Also I tested the SPDIF connection and that isn't working either. Is there a way to test the voltages on that too, or does the whole of the audio ports share that same chip?

Many thanks for your help so far.

Will

 

[romirez]

Measure resistance and voltage between ground (gnd) and point 1.
Measure resistance and voltage between ground (gnd) and point 2.

 

[willowen100]

This is the first point shown at the top of the picture you had. -

This is the second point shown at the bottom of the picture -

Thanks for your help

Will

 

[romirez]

which scale? must be 4 results (2 resistances and 2 voltages)

 

[willowen100]

The first image shows voltage of first point of around 3.75v and the bottom image shows point 2's voltage of about 0.5v. I'll post the resistance results to you straight away.

 

[willowen100]

My dad and I have tried to work out to how to test the resistance on this meter and it's been a long time since he was an electrician. The only thing that we can is a 1k resistance with the dial turned the left.

 

[romirez]

So, missed 2.5V and low 5V? If your results was correct and you still have warranty- its time for RMA. Need to change ALC1150 chip.