Well I had my first problem at day four. I came home from work and went to power everything up(TV, receiver, computer) and the TV flashed the computer screen and then turned itself off. I then pressed the remote power and it did the same thing. So then I unplugged the TV and waited a few minutes. When I plugged it back in I got the dreaded power light flashing once a second. The TV then refused to turn back on. I repeated trying this over and over and still would only get the flashing power light.
I then proceed to call Sharp and the tech support walked me through a reset which is documented below.
1) Unplug the TV
2) Hold down the "Input" button and the "Vol Down" button at the same time(On the TV, not the remote). While the buttons are being held down plug the TV back in. Hold the buttons until you see a "K" on the screen.
3) Now press both the "Channel Down" button and "Volume Down" button at the same time(On TV, not remote). You should then get a service menu.
4) Get the remote and press the down arrow button. It should select an option called something init. Press right arrow. Now you should see a three "off" labels. Where one is now changed to "On". Press enter on the remote and it will flash some stuff on the screen. It will end with a blue screen saying software version numbers. If there are errors they will show here. e.g like a lamp error. I had no errors.
5) At this point turn off the TV and turn it back on. It should be reset now.
We went through this procedure and I still ended up with the power light flashing and being unable to turn the TV on. Even though the TV worked in the service mode. At this point he informed me of the bad news. They had to send someone to my house for service. So we scheduled the service and call.
Now after I was done with Sharp on the phone, I still could not believe that the TV would work in service mode, but would not work normally. So I went back down stairs and went through the reset procedure again. This time though instead of unplugging the TV after the reset I just pressed the power button to turn it off. I then waited a minute and turned it back on and it worked. No more flashing power light. Then I unplugged it, waited 5 minutes, and plugged it back in and it still worked. So far its still working(tried again this morning).
I tried getting some answers from Sharp on the what it means when the power light flashing and TV won't turn on but he didn't give me a definitive answer. He ask if we had any electrical surges, or storms. We didn't have any storms or power issues yesterday. So it leads me to believe its some sort of power supply issue???
Now that its working, I am going to wait two days and if its still working I'm going to cancel the service call. I just don't want to cancel everything, and then it locks up again. Forcing me to go through entire support call again.
I do want to point out one more thing that may have triggered this. At the time everything was powering up I was in the TV's menu system(TV always comes on before the computer). Specifically I had turned "on" OPC. At about the same same the computer was going from the windows boot screen to the login. At which time the resolution changes. I don't know if this triggered this, but I though I would point this out. This may have been some freak condition causing this to occur, but had nothing to do with a power issue.
I'll keep you posted.