Hitachi 43FWX20B My 6 year old rear projection TV will not turn on. yes its plugged in. I am very good on fixin things, but dont know where to start with a rear projection TV. Please help out

I have a similar pblm. But your first step is to power on with tv's button. Look into the back through holes and look for 4 green and 1 red LEDs lit. If not there are 3 fuses on the power supply board.Fuses can be easily changed.
next step call service.