So, no one has tried to change the voltage regulator(s) in one of these before or knows how to do it? It has been a while now and I haven't seen any more replies to my posts. Just thought I'd try to bump this back up in case anyone else hasn't seen it who might be able to help out. Thanks!
Changing the VRM is not that easy. Even if you could you wouldn't make it any more efficient. It would just overheat and run loud like the S1.
Its old technology.
Also these chips are the same chips as the S1 not the S3.