Samsung HC-P4752W Shuts off on it's own!

[thirdgenfirescue]

Have a Samsung HC-P4752W rear proj TV that likes to turn itself off. Problem started when I bought the TV last year (used) and has gotten progressively worse since then. Now, it does it every day, every time I try to watch it. It will come back on if I push the power button, sometimes stay on for an hour, sometimes turns off again immediately. The previous owner had the convergence output IC's and resistors replaced, and a convergence alignment performed about a year ago because the TV was turning itself off. Seemed to work good for a while, then started to do it again. Please help me! The TV is almost five years old and I know it's probably time for a new one, but I really would like to repair this one and hang on to it. Thanks in advance for any help!

[Dan the Tv man]

Replace the whole convergence board.Find prices at Partstore,Tritronics inc,Shop Jimmy etc websites.