Screen is blank. Green LED power light is

perform the 'Flashlight test'
. LCD LED TV Repair No Image Blank Black Screen Flashlight Test How to Fix...

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. Viewing it in "Mosaic" or "Magazine" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

• Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen A2 slightly.
  

your wii is fake

Call 1-866-771-4018that is the tech support for Philips.

If you get a green blinking led everytime that the power is pressed, then you need to pull the EEPROM and send it to Mitsubishi for reprogramming. However, it the green led blinks longer than 90sec after it is plugged in, then you need to look at the caps in the DM module.

Hi, this is main board failure and you will need to replace this vital board. you power board is fine but, it is unable to send a proper current through the main mother board due to the damage at hand.

Depending on when you bought it. There should be at least a one year warranty. If its still under warranty have dell replace it.
Mark

go to hell

Hi..there,
You've got a busted backlight inverter... Need to replaced a new one...