So, I've got a NBV4. Don't remember how it happened, but there was an issue that happened with both the LED IC and audio IC. Got the correct IC part numbers from Erv, and I replaced them. LED works fine, and the audio amp legs look to have solid connections AFAIK. The sound is somewhat staticy (not during the boot-up sound, for some reason.) I've tried different speakers with the same result. Wiring is spot on, no joined connections, nothing I can tell. Is there another IC on the board I should look at that deals with sound? Or should I just redo the audio amp? Or is there possibly something further with the board? Kinda baffled at the moment.