No picture and beeping sound emitting from unit.

Hi Toshio, I have the same unit and I am not aware of a sound period adjustment. The unit most likely needs a hard reset because of a software glitch. To do this hold down the zoom in and zoom out buttons while turning the unit on. Keep holding both zoom buttons until the start up screen is completely loaded. This procedure returns the unit to its factory settings and should solve your issue. Regards Phil.

THIS SHOULD RESET IT
1 DISCONECT THE POWER PLUG FROM POWER SUPPLY 2 CLEAN FILTER 3 HOLD DOWN THE POWER ON/OF BUTON ON THE UNIT AND PLUG THE UNIT KEEP PRESSING UNTILL IT EMITS A BEEP SOUND FOR APROX 5 SECONDS 4 DISCONECT POWER AND PLUG AGAIN
IF THAT DOES NOT WORK 1 DISCONECT UNIT 2 HOLD DOWN THE MODE KEY ON THE PAD OF THE UNIT AND PLUG THE UNIT KEEP PRESSING UNTIL IT EMITS A BEEP SOUND APROX 3 SECONDS THE UNIT WILL START. 3 STOP THE UNITS OPERATION BY PRESING ON/OF 4 RESTART UNIT.

BEST OF LUCK

Sounds like the power adapter needs to be replaced,even though the light comes on the adapter is still weak or malfunctioning.

Check your power, if your running through a power strip try going into a battery or directly into the wall.

HT transistor, or rectfying diode from chopper transformer is blown.

tv power supply problem

check for high voltage s3ection of your TV. A Flyback transformer is defective especially in the high voltage cale of your flyback....

it is due to your VIF OR TUNER section has stopped working due to no supply or some parts gone defective. some times it is due to signal absent from the source from you are getting. good luck.

sounds like your input board went out. I had the same problem on the ILO version of this panel. Got a replacement part off of Ebay. Search for Ilo plasma on ebay and it will come up

I have the same issue...help!