This morning, I turned on the TV and the picture statrted to appear and then the TV turned itself off. It doesn't turn on now. When I turn it on, it clicks, the lights on the controls blink momentarily and the TV never turns on.

Hello Mike. Your set is suffering from one of the following: bad high volatge transformer, bad fuse, or a bad starter box. If you are electronically minded and equipped with test equipment you can isolate and check each of these components, otherwise a call to a repair shop for an estimate is the next step. Regards, Joe
PS kindly rate my answer. thank you.

Man, unfortunately it could be (in order of likelihood) 1. power supply. 2 main board (mother board). 3. inverter board (this supplies power to the panel) some models have combined the inverter and power supply into 1 board. 4. panel itself.

You can try looking at the power supply looking for swollen caps. electrolytic caps should be flat on top, if you find ones that are rounded on top they are bad.

if the inverter board is seperate you could try unplugging it so as to take it out of circuit. If the set stays on (screen will be black of course) that's your problem.

Some models you can't get the inverter without getting the panel as well, this would make repair cost more than just replacing tv.