Part did not fix problem
After careful research, I ordered replacement power supply board for my Samsung TV. Put replacement board in, and did not fix problem. Unknown if part is bad, or it is another problem with the tv, either way not worth time or money to fuss with it anymore. Part is not worth returning due to low cost of part/cost of shipping. Well, guess I keep my day job and give up tv repair career lol. Both part and tv earned a place in the trash.