Question about Sharp LC-70LE640U Aquos 70" Class 1080p Edge-Lit LED HDTV with 120Hz,
Sharp LC-70LE640U turned of by itself. Won't power back on. Inside the back it flashes a white light 2 short and 2 long. Tried to disconnect power for 10 minutes, no help. Tried to blow a fan on it, to cool in case of overheat, no help. Any suggestions?
If it is brand new, and under warranty period, it will be best to replace this TV. Check the site linked below. There are some details about these type of faults to Sharp LC series TVs. Blinking codes are also described in detail there. Click this link.
View it in "Timeslide" or
"Flipcard" option, which can be selected from the drop down box menu by
the [Sidebar] tag, at the top left corner of the display window. You can also click the [Home] tab to
see the latest updates. It will make search easy. There are more than 1350
posts to different brand TVs now. Pull up older posts there or make a search
by typing in the brand name of the device in the "Search Box", at the top
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Posted on Dec 04, 2012
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Posted on Jan 02, 2017
SOURCE: Blinking green power light
I had the same issue after one month of use. A repair cie came and fixed the problem. It appenned to a neon connector that wasn't properly plugged in the TV.
The Technician explained to me that m TV had 16 neons and a sort of controler for those. Often - from factory - a cable is not sitting properly in its position...
Since I have no problem.
Posted on Mar 03, 2009
It's a power supply related problem. When it turns itself off, this it called protection mode. The TV automatically turns off to protect other parts form being damaged.
The most common problem is the Power Supply Unit or the Backlight Inverter Board.
You may have to take the TV to a repair shop to find out which one is bad. Paying a repair shop to replace the board for you maybe more than the TV is worth. If you let them diagnose it and you replace the bad circuit board yourself, it would be cheaper.
Here's a place I use to get parts for TVs:
The problem is the repair shop may charge you double or three times of what the part costs at the web site link above. Then, plus labor. I just want to save you money. :)
Posted on Jun 03, 2009
Backlight invertor is most likely cause of the problem, in rare occasions defective CCFL lamps could cause similar symptoms. Replace defective parts, reset lamp error counter and you good to go.
Posted on Dec 02, 2009
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