So after a few hours of sifting through the internet I've found the service manual, a training manual and of course the operations manual that comes with the TV.
Going through all the information I think I've diagnosed the problem. I can't verify it because I don't have an oscilloscope but I think the D board in my set is bad. The D board is the main panel control board. I found a few on e-bay and have one on the way for $10!!! It appears that e-bay has pretty much every board for my TV pretty cheap so if this doesn't do it I'll keep trying. I might even pick up a good used o-scope, always wanted one so now I have a pretty good excuse......
Sony 2019 Sony XBR-55A8G
Panasonic TH-42PX50U - 49,203 hours! DIED :-( then resurrected by me on 1/16/2020!!!!!
Various "cheap" TV's in kids room and video game room.