Unless your UPS is designed for AV use, there is no line conditioning suitable for home electronics.
Servers have switching power supplies. Even though your Sammy has a switching power supply, its design is stripped down a bit.
It lacks the ability to shutdown critical circuits during major disruptions, unlike Server and Desktop computers.
I know as I have found a few issues with Sammy LED DLP power supplies. One there is no voltage crowbar or IC shutdown to eliminate unwanted spikes or over-voltage at the switching power IC. The low wattage zeners used fail and can cause higher than normal voltage though the components.
If you can use Component input, if not it means your main board is not fried, and your main power supply is questionable. As most issues come from power supply failure.
I was able to repair my main board, but it was fairly easy compared to having a main chip go from over voltage.
Yes, my 2010 Panasonic 42C2 performs better than an S2 No floating blacks and keeps the lowest black levels.