My new flat screen tv was working perfectly fine last night, i turned it off last night at around 3am...and then when i turned it on today, it wasnt working, i either would get a flashing black screen or a grey screen, i checked to see if it was my dvd player but it wasnt, i checked to see if the right input was on, but it didnt even show up...help?

THERE IS A INTERNAL PROBLEM !!! If it is still under warranty, take it back

Check your power cable. Unplug it from both ends and plug it back in

Need to change caps on power supply or buy a new power supply at www.partstore.com

you do not give the model number for a better diagnosis
the most common cause of this problem is the invertor or at worse the screen its self.
If it is a lvd 163 you can purchase a new invertor from sales@tvs-services or call 01245392539

This commonly happens when the power inverter board goes out. It powers the LCD or PLASMA screen.
It's a common problem for all brands of TVs. Mine was brand new and it lasted for 4 months until I had the power inverter board replaced.That was back in Nov of '08. And it's still working today.

If you have the warranty, use it. The board itself cost between $75-$250, depending on the size of the screen.

I hope I answered your question. Please rate me. :)

I talked to a Samsung support helpline and it needs to be taken to a service center for repair.

Does anyone know where can I buy a screen for a 27" LCD Insignia TV. Model is NS-27LCD? My screen creaked. I checked out e-bay and have not found a broken TV with a good screen. Does anyone know where I can buy a screen at. 
Thank you all for you time. 
JC 

Cant get picture, sound working. new cables has 5 plugs

Hello, please contact your Philips Dealer ASAP. If you need more info please advice. Best regards, Arpi