My Sharp LC-52E77UN TV shut off one day for no reason. The power light was blinking. I had a repair person come out and he reset it by holding the down the buttons while plugging it up. They charge me 90 for that. Now they called back two days later and said that the back light is out and that what they did was just a quick fix. They said it will be a 475 to replace. My question is does that sound normal? My tv hasn't went back out yet. What should I do? I think that it is fine..

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Sharp TV - Flashing OPC & Power Lights - YouTube

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https://www.youtube.com/watch?v=BH1OcQ6dIEE
Jul 1, 2011 - Uploaded by Tweetssun
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http://www.retrevo.com/support/Sharp-LC-52E77UN-TVs-manual/id/23457ag122/t/2/

Check this link to download the user manual to your set. It have all details.

How to perform a cold hard rest on the Sharp LC-60LE810UN TV? It won't power on and just blinks.

THe problem is in the set top box. Or common called the tuner box. IT looses the 5 volts to the main display and thus the monitor will go into a shut down state. THESE boxes are factory repair only and must be sent off to repair.

Unplug the power and leave it unplugged for a few minutes.
Then press and hold the buttons on the TV while another person plugs it in. Hold the buttons down for 30 seconds, or until the set beeps.

It is possible that the flash update was not successful for some reason, in which case the set may have to be returned to the factory, or a factory service center to be reflashed properly.

Please post here to let me know if this helped.

the first thing that you need to do is to open the back cover of your tv.Go to the power supply section it is separate board where the power cord is connected.Using a multitester,plug in the power cord and measure for the output supply.see if the 5vdc ,12vdc and 24vdc are present..if one of this output is missing,replace the power supply board But if the output voltage are complete,replace the inverter board,It is a board that supplies the high voltage to the backlights of your monitor/screen....You can also try to reset the system of your tv by pressing the the small switch mounted on the main board press it twice while the power is on...tnx and good luck!


please vote for my help!

Take it back to the store and exchange it.

Call sharp back again and tell them you first want to register for aquos advantage program, which is free. By doing that your service will go much quicker with them. You then tell them that you want to get set up for service. They will have one of their authorized professionals come and fix your tv in a matter of days. If their tech cannot fix it, they will replace your tv free of charge as long as you are within your warranty.

How many times per second does the POWER led blink? (dont worry about the OPC).

1x per second (constant, steady blink) = bad inverter/lamps
2x per second = bad power supply
3x per second = bad main board

You can buy the parts online and fix if yourself!!