I have a sharp LC60E78UN.i had a green flashing nonstop power light.did the reset now power light stays on.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board..

replace the power board

Have you had any recent power outages? Try a different outlet of possible and see if the tv responds. If it doesn't try a hard reset.

The reset is at the back to the TV, so turn the back of the TV out.
2. Locate the Power plug at the back to the TV.
3. Then near the Power plug there should be a small hole, use a paper clip or a needle and push into that hole for a brief period.
4. Now start the TV and see if the settings has going back to the factory default.

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.

Sharp TV - Flashing OPC & Power Lights - YouTube

? 0:50
https://www.youtube.com/watch?v=BH1OcQ6dIEE
Jul 1, 2011 - Uploaded by Tweetssun
Sharp Aquos TV flashing a OPC & Power Lights in a pattern of 3 flashes, ... Sharp Aquos LC-32D44 - One blink lamp error - Nopicture or sound - Diagnosis ... Repairing Flat Screen TV - Blacked out with blinking red light ...Missing: 32dv22u

Sharp lcd tv power button flashing - HDTV - Streaming Video & TVs ...

www.tomsguide.com/forum/54708-4-sharp-power-button-flashing

Feb 8, 2012 - 7 posts - ‎3 authors
We have owned a Sharp 32" LCD TV for about two years. ... However a quick Bing search shows that the blinking green light usually means a bad power board, which seems ... No picture, no sound, just a black screen and two blinking green ... a cable surge block on the coax where it comes into the house. Sharp lcd tv power button flashing - Digital TV
19 posts
Oct 14, 2012
Sharp hd tv blinking power no picture - Digital TV
2 posts
Jan 7, 2012
More results from www.tomsguide.com
Missing: 32dv22u

Sharp Aquos LC 42DH77: Inverter, Backlight, Power and ...

www.normsweb.com/tektips/42dh77.shtml

i have the same problem. i just replace the power board because of the "green blinking" light. now, light stays green, picture comes on for a few seconds, then blank....

did you fix your problem.

This article might help you.

Ps3 Red Light Fix

Hi i have seen this before sharp hdtv's are known for having the internal power supply go faulty

reset the lamp timer. unplug it and plug it back in. hold down the enter, down, and menu buttons, then press the power button.

i hve the same problem. I turned on my Sharp Aquos lc-32d62u HDTV last night for the first time, but it is black and a blinking green light.
did you find a solution?