helloo
i have a HP Elitebook 8560P with NO sound comming from the peackers or from headphones.
I ALLREADY checked:
*several drivers and windows versions (everything looks normal in device manager)
*BIOS update
*different speackers
* checked the jacks
* changed the IDT 92HD080B1X5

AND still the same problem, the device is installed i can turn volume up and down..but no audio!

ANY OTHER IDEEA?

You can check wires. Recently I had some trouble with wires from motherboard to "headphones OUT/ mic IN" plate on the EliteBook 8470p. When I installed the bottom case I squeezed this wires and got some mysterious problem with sound.

I just checked 8460p - it has no wires on the "speaker in/out" board.
This board attached by socket directly to the motherboard.

Although you can check Device manager - may be speaker has a checked "disabled" option.

yes it has a small pcb board with a connector, it's not a software problem. i allready checked device manager an drivers.
in device manager everything looks ok, even when i click the volume icon i can move the volume up and down, i see the green bar but no sound.

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Posted after 1 hour 45 minutes 59 seconds:
dose anyone have a datasheet for this model? maybe i can figure it out

Which kind of datasheet do you want?
Simple use warranty for this pcb and forget of it.

i don't have warranty for this laptop.

Are you sure?
You can type me in PM your serial no and I can check it warranty status.
Need to know - 90% of the EliteBook has a 3 year WORLDWIDE warranty.
It note that series 8x60 starts in 2011 most of them still on active warranty.
On last week I done 2 warranty repair of 8560p.

Hi, had the same problem, by me was no power on pin 27 of IDT chip, found U5 (2,5V LDO) defective, after changing it sound come again.

thank you mihaicozac! that was my problem too. Changed U5 and now sound is back to normal