Help Thinkpad L440 R speaker noise

[Raziel19935]

Hello guys, I wanted to know if the alc3232 chip can be replaced by one from another alc3246 model, because the left speaker works, the right one has noise like ssss, I tried that speaker and it works,I checked your capacitors, I saw a burnt one, it was replaced, but it continues with the noise.

[Th3_uN1Qu3]

Re: Help Thinkpad L440 R speaker noise

I cannot be bothered to look up the pinouts for you, but here is what you do to determine if it can be replaced.

Look up the datasheets of both chips. If no datasheet then schematic of laptop T440 you already have, find schematic of laptop with ALC3246. Now open them both side by side, go to the audio codec section and compare the names and connections of all the pins. If they look to be the same, then go ahead with the replacement, it will work.

I used to do this all the time on desktop motherboards that were left in the shop by clients who upgraded, those were definitely not worth investing in parts so I fitted what I had available. As long as the chip pinout was the same, it worked. The information displayed by the driver will also change to reflect the new chip model.