There is obviously something wrong with the set but the tech didn't catch it giving issues so wasn't able to fix it...I"d start by checking the power supply voltages if your able
Vacuum the vents on the back of the display. Mine were quite dirty, shame on me. The flashing red power light was solved by my doing this on mine.
SOURCE: SHARP AQUOS 32 INCH FLAT SCREEN
Hi.
Easy fix do the following.
Set is in factory mode. To remove follow these steps below extracted from the service manual.
http://dysonmanuals.llc.nu/
SOURCE: Sharp aquos lcd screen goes blank
The problem is most likely the the screws are loose on the inverter boards. The screws must be tighted as they provide the ground to the inverter bds. The inverter boards are undet the shields on both sides of the unit after pulling the back cover. One way to make sure that you are losing back lights and not video is when your picture goes black, shine a flash light on the screen at an angle and will see the video is still there. This mean the back lights are out. If you do not see the video it may be another problem
SOURCE: Blinking power light.
I have a red blinking power light. When turning on the TV with the remote is flashes green then returns to the red power light. I have tried the reset several times and have unplugged for several minutes but the set will not come on.
SOURCE: Red Blinking Power Light Sharp Aquos
What do three blinks of the power light mean on my Sharp Aquos LC-C5262U? I cannot power up my display.
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