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The audio codec IC is a 48 pin Realtek ALC233-VB2-CG IC (supplier examples only)
To remove/replace the audio IC you will need smd (surface mount device) soldering skills and tools to do the repair.
I suggest that you remove the motherboard from the laptop case to do this. Here's a video that may help.
If doing this yourself is too daunting, contact a reputable, professional laptop repair service and ask for a quote to do the repair.
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