I've reached out to shopjimmy.com, for assistance as well. Hopefully, they will get back. Any other suggestions?

Bump.

Hello all,
As the title states, I followed the troubleshooting guide located here: [URL]https://www.manualslib.com/manual/2311596/Panasonic-Tc-P55vt60.html?page=53#manual[/URL], which concluded the 'A' board needs to be replaced. Looking around the net and eBay, I see that there are repair services for the board (TNPH1043UE? Not sure if it is a 'UE' as the suffix grid does not appear marked). What additional troubleshooting can be performed to ensure 1) this board is the problem and 2) since there are repair services, what are they fixing on the board?) I expected 3.3V not to be available...