When your television refuses to turn on and all you have is the standby light or the green light turning on and then going off in few seconds, that is a sign that there is a problem inside of the unit.
When the television gives off signs as this,it could be as a result of one or more factors going bad inside the unit of the television.
The factors that could cause the problem is eithere there is a bad capacitor on the main board or the power control board(PCB). Or the lamp is bad. It could be one of the two facotrs or both, therefore, this will result in you running a check on these factors.
To test and replace the bad capacitor, you will be in need of a screw driver, soldering iron, desoldering braid, soldering wire and replacement capacitors. Unplug the television, turn to the back, unscrew the screws that hold the back cover off the television, then you lift up the power control board and assess it for any capacitors that looks shrinked, swollen or burnt out. Once it is detected, trace it to the back of the board, then you desolder it off the board, get exctly that type of capacitor and fix into the board and solder it back on using the soldering iron and soldering wire. Please be very careful about it, in order for you not to create a bridge.
Do the same for the main board of the television, the main board is usually clipped onto the frame of the television.
For the lamp, you will have to reach out for your user manual, as am not keen with the location of where the lamp of your model is located, but once you locate it, have it checked and replaced with a new one.
That should solve the problem for you. If you are not familiar with such technical/electrical fix, i will suggest you get someone who is familiar with such to handle the fix, because televisions are well known to store current over time.
All the best
on Nov 19, 2011