История для "Sound system is broken"

My laptop sound won't work. I've disassembled the device and I strongly believe there's a problem with a diode or transistor, and since all sound hardware seems to be on board, I'm probably going to need to replace some of these small parts. Does anybody know of the schematics for this laptop?

Устройство:

Acer Aspire 5253

Статус:

open