No sound via the speakers (dead IC)

I accidentally damaged the motherboard by dropping a screw and causing a short circuit, while attempting to clean the hardware without disconnecting the battery. The motherboard was repaired by the technician.

The only issue that I'm still facing is that there's no audio output via the speakers or the 3.5mm audio jack leading me to believe that the sound chip is damaged.

What are my options and how to obtain the replacement IC?