When I plug the TV, the green light is ON but no picture no sound

If the TV has no picture or sound, but the led turns from red to blue or green that means the mainboard has sent the power supply board the start up signal. The first thing that needs to be done is the voltages need to be checked to the power board. Follow the steps.
1. Hold the (menu) and (vol-) buttons on the side of the TV.
2. While holding the (menu) and (vol-) button on the side of the TV you also need to press the (power) button on the side of the TV (NOT REMOTE).
3. When the blue light comes on and stays on wait 10 seconds then let go of the (menu) and (vol-) button.
4. Wait 30 more seconds. After waiting another 30 seconds you should see some type of picture appear on your screen. — If those steps do not work then you need to unplug your TV for 10 minutes then hold the (power) button on the side of your TV for 60 seconds - plug in and turn your TV on.

If those steps do not fix your problem I would check to see if your device is still covered under a warranty. If not I recommend www.tvrepairpros.com they will find a technician in your area to further assist you.

There should be some fault with its main power supply regulator board circuit. Contact any service technician.

When u turn the tv on,u hear alot of clicking?That mean the Ballast that help the projection bulb to work is dead.Change the Ballast,might as well change the bulb too.U don't know what is the condition of the projection bulb in.

Power surge will knock out picture and sound if you don't have a power strip. Found out from Best Buys when purchasing another LCD TV. They have a warrenty against such problems.

Should have been 3300 UF 10V caps that were bad? Shouls have been replaced with 3300UF 18V. 50V is huge. If it was replaced with a 50 the polarity may be wrong or the cap it too big to be seated property. Sometimes the caps just dry out and even a normal looking one will be the culprit of no OSD. Are you getting an LED fault code blinking? That should be a red led. Do you hear the relay clicking.? When you replaced the caps did you charge them? Just plugging in the set without trying to power it on for about 20-30 mins. I may be able to help you

gysgt2u1@yahoo

Hi i have a pilips 42" plasma tv (42PF5320/79) i can hear clicking the green light is on and the tv will go into stand by if i press the power button and the red light also comes on .I have turned it on and off and it works now nothing just the light on the front as if its working looking at the back through the slots two green lights come on then the tv clicks and they turn off,thanks

Unplug it from the wall, wait 2 minutes and plug it back in. if problem still exists, its probably the main pcb.

TRY UNPLUGGING SET FOR A FEW MINUTES...PLUG IN LINE CORD WHILE HOLDING PRESSING POWER BUTTON..IF THIS DOES NOT WORK..CPU BOARD IS FAILING...P/N 667-L32K5N-56I...TRY CALLING MCM FOR PARTS AVAIL/PRICE...JOE ACE

It does sound like a power supply problem but that can be misleading because a problem somewhere else in the TV can be "holding down" the power supply. This can usually be determined by using some isolation techniques.