Samsung Plasma PN58B650S1F Dead, HELP!!

Hello, I recently had my Samsung P58B650 die on me. While my children were playing a video game, the TV just turned off and started constantly making a clicking sound while the stand-by light just blinked repeatedly. After doing some research on the samung's support website and several other wbesites, i came to the conclusion that it was a bad power supply. I then bought a replacement power supply through ebay(maybe a mistake), and installed it in my display. The same problem!! Now im not even sure the power supply is the problem! I can't figure out what the hell is going on and its driving me nuts! This is my home theatre TV and i really dont want to have to spend the money on a new one. I was thinking of trying the main logic board next, although I am just take a shot in the dark. Any suggestions, ideas, advice or troubleshooting methods?