I plug the tv in and push the power button and the light flashes orange and green a few times and the stays green and there is no picture or sound. when i push the power button and try to turn it off the light flashes orange and green then goes to steady orange

Your main board died.

Not sure if you saw Tom's Guide
at Sharp lcd tv power button flashing

(1) 4tinyhearts said:
I unplugged the TV and held the buttons down and it continued to flash. I continued to hold down the two buttons and replugged it in again and it worked. TV back up and working.

(2) lastditcheffort said:
Unplugged it. After looking for a new tv online I decided to try getting it to work. So, plugged it back in and held down the power button, a red light came on, held down the power button again and an orange light came on, held down power button again and green light came on and tv powered on. This was simply a case of trial and success!

(3) Nateinportland said :
unplug, hold power button, plug in. If that doesn't work, unplug all the HDMI cables, unplug the power, hold power button, plug back in.

remove lamp assy and see if is bad,4 year is abouth time fornew lamp.

check the Y-sus and Z-sus board

Look at this link on the bottom to see what the blinks tell you.

http://www.agoraquest.com/viewtopic.php?forum=70&topic=31721

Mike

The 6 inverter transformers on the bottom of the picture is the problem and what need to be tested.
Unplug the 6 wires that goes to the LCD screen. Use a multimeter to test for resistance from each output plug on the board. The one without the resistance is the bad one.
If this doesn't locate the bad one this way, Each plug should give out DC voltage if working properly. Test each plug for voltage.
The TV will automatically turn off in a couple of seconds like before. You'll have to keep pushing the power button to test each output plug for voltage.

Soon as you find the bad Inverter Transformer, just solder in a new one and the TV should work fine after that.
The part # for the Inverter Transformer is LTZ2PC0MS008.
Here's two places to get them:
http://www.partstore.com/Part/Funai%20Corporation%20Inc/Funai/LTZ2PC0MS008.aspx

http://www.encompassparts.com/products/?LTZ2PC0MS008

Remove the battery and try it on AC only. A failed battery can keep it from powering on.

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

on the signal board replace the caps by the 5/9 volt regulators. c2p04 is the main culprit. 6 caps in total can be changed. I believe c2p05 also.

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.