Solution no_1by Realist 2006
Member since:April 09, 2006Total points:15,673 (Level 6)Best Answer
- Chosen by AskerIt is almost certain that the power supply
unit is in what is termed Hiccup
mode which is simply the power supply shutting down when a fault is sensed , of course when the set is switched off the fault can not be seen so the set switches on again whereupon the fault is sensed again so the set switches off , ad infinitum
, hence the flashing power light ! Usual cause is short cct line out transistor or transformer . That my friend is about as far as one can go using guess work
The problem is either the power/inverter board or the lamps inside the LCD panel. if one of the mini florescent lamps fail to start up the inverter section of the power/inverter board senses this and shuts the set off and registers the error. If none of the lamps light up, then the board has to be bad (not all of the lamps can go bad a the same time). These lamps are similar to those in shop lights (just smaller) and eventually they will go bad. When a lamp fails to light up then it could be that stage of the inverter or the lamp. A technician is neede to determine which is bad.Knowing this, here is a way to temporarily over-ride the shutdown, you should do this in a room that is as dark as possible to see what the back lights are doing during the couple seconds they attempt to light up. If it never lights up, then you can replace the board yourself . If it lights up and shuts back off then you need a technician to determine if it needs a new panel or the board.
To over-ride: unplug the AC cord, press and hold the [volume down] and the [input] buttons on the TV keyboard while plugging in the AC cord. hold these buttons until the indicator turns green, then release them. when watch what happens. If the green light never shows then do again (you will need to unplug the AC cord for over 30 seconds between each try).