Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
SOURCE: jandy one touch control screen
your RS board in the power center is shot. that message means there is no communication to the power center.
SOURCE: Philips 50 Inch Plasma Model 50PF7320A/37 will not turn on
Commonly it's going to be a power supply related problem. The two boards that need to be looked at is the Main Power Supply Board or the power supply board for the screen. The one that powers the screen, some manufactures call it a Backlight Inverter Board.
If you have some electronic experience, you can sometimes find a Service Manual for the TV over the internet for less than $20. It will have the all resource material for repairing your TV model. It's just the matter of replacing the bad part on the circuit board.
SOURCE: LG 42 Plasma try's to turn on but just goes back into "stanby" ?
Check to see if you get Va and Vs voltages from the power supply. There should be some wires running to the y-sus. A couple of those wires will be labeled va and vs. Are they present? There will be a sticker stuck to the panel somewhere telling you what they should be.
SOURCE: lg model 42pm4m plasma monitor won't turn on, red
Does the tv make a clicking noise like its trying to turn on before the tv goes into standby and the LED starts flashing? I suspect this is due to a shorted component, most likely to be in the 5V(switching) line and just want to be a bit certain before we start testing the power supply.
SOURCE: My LG 50PJ350-UB PLASMA TV DOES'NT TURN ON BUT MAKES A TURNING ON NOISE
check for bad capacitor in the power supply board and then check shorted component parts at the sustain board.
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