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Related to a capacitor blowing up on your powersupply that supplies the voltage for the backlight inverter. The backlight inverter lights the tv. The power supply will need to be repaired so it can supply the 24v needed for the backlight inverter to work properly.
I hate to say it, but it is prob the main board that went bad. (the board where all the inputs get plugged into) It is possible that it might be the power supply. One thing to check is to make sure you have 25v coming from the powersupply board to the connectors that plug into the main board. If you do have 24-25v than you will have to replace the main board. If not than the powersupply.
This could be alot of things but I tend to lean towards a power supply issue. The short story is that when your tv starts up, it checks alot of things to make sure they are correct. If one of the voltages is off, then the tv protects itself and turns back off. In my experience when they turn back off its almost always power supply issues. It could be a card pulling down the powersupply, or the neat gizmo that powers the light. But I have not seen alot of that.
Generally if its not a power supply fault that the tv just cant tolerate it will flash a code at ya. Blink blink (Im messed up and here is the number of the fault) Blink blink BLINK!
I wish I had better news, however powersupplys are one of the cheaper and easier things to fix.
there is a connection between the inverter and the powersupply. on this connector there should be a line that supplies 24 volts. if you are getting that 24 volts on a volt meter the you are most definatly looking at inveters. if you dont powersupply. just a warning if you have 24 volts and the inverter doesnt work you need a new lcd panel, which is not worth buying if you can find one
Open the back of the TV,and look at the can shaped items on the boards.If any of them have the tops,or bottoms bulged out,they need to be replaced.This should get it working again.I hope this helps.If you have any questions,please let me know.Thank You very much!