ok, thanks. Like I said, I'm going into this pretty green & other tech didn't want to tell too much. Thank you for the info, will check it out and also will see if I get reply from TI after the holiday and go from there. Mostly unchartered territory ...

Yes , older IC. It's on a Bose product from 2006 that I do restorations on. The chip has been ID'd as a problem in some units, preventing them from working. I have been vaguely told by another tech who also services the same product (business secret?...