Just got this information from the MTH service dept. I can't share any of the detailed information, but your favorite MTH service person now has very detailed information about PS-3 boards and related hardware. It goes into detail about what some of the faults are, where to find the problem, what parts to replace, and where to find them. Also detailed component placement on the boards. This is more information than they have ever released.
The purpose of this post is now your repair person may be able to save you big bucks on repairs, instead of having to replace an entire board, a couple of 2 dollar parts is all it needs. A shout out to service manager Jason for this information.