Dead 60 inch RCA

I have a 60 inch RCA home theatre TV, Model #P60152CK, I was watching it and it just shut off. When i try to power it up the green power light flickers but thats all. I had this happen once before and the repair man knew what the problem was and said thats the only thing that ever goes wrong with this telivision, This repair man has since died . Is anyone farmiliar with this and if so do they know what part # I need.
Tanks,
Nick