It's hard to tell what's going on with your set specifically because there are so many options. I cannot thing of anything causing the power LED to blink that you could correct yourself.
In my mind I imagine a green led blinking constantly without the sound you normally hear when you get high voltage to come up in the set. If thereâ€™s no high voltage that means that thereâ€™s a problem way before you are suppose to get the TV on. I know this set has had problem with a module that is considered the brains of the set. If this module, called the SSB, is not functioning properly you canâ€™t that suspended state like its taking an eternity to come on.
If the set tryâ€™s to come up you hear activity Before it shuts down with a red blinking LED, then you have something damaged making it go into protect.
Things to make certain are that itâ€™s happening after you hit power, not after you plug it in. Also leave it unplugged one night to let it reset and try again in the morning.