Have A Sharp Lc37d40u With Power Light Blinking Any Ideas

The power light is an error code that tells me exactly what is wrong with the TV. Count how many times the POWER led flashes per second? (Dont worry about the OPC led)

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

If its 1x per second, try doing the factory initialization to get the TV back on to confirm a bad lamp/inverter.

Try doing the Factory Initialization (WARNING: THIS GIVES YOU ACCESS TO THE SERVICE MENU. DO NOT ADJUST ANYTHING IN THE SERVICE MENU OTHER THAN WHAT I PROVIDE YOU IN THESE INSTRUCTIONS. IF YOU DECIDED TO ADJUST ANYTHING OTHER THAN WHAT I PROVIDE YOU IN THESE INSTRUCTIONS, I WILL NOT BE RESPONSIBLE IF ANYTHING WRONG HAPPENS TO YOUR TV.)

1. unplug tv
2. press and hold at the same time "Vol -" and "input" button on the TV set.
3. while holding those buttons, plug the tv back in
4. the tv should turn on by itself, keep holding the buttons until the letter "K" appears. Then let go.

Once the TV turns on, take a look at the screen. Does it flicker then shut off? Or do you hear a buzzing noise from the right edge of the TV? If so, then you have bad inverters or lamps. Once youre done, unplug the tv to get it out of the service menu.

If it is 2x per second or 3x per second, then those boards are just bad and they need to be replaced. There isnt anything you can do right now to fix it.

Thanks

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Why is my Sharp TV light blinking?

Any blinking activity on the Sharp TV OPC (Optical Picture Control) light most likely indicates an error. When the light is constantly blinking, you must troubleshoot to narrow down the problem and seek solutions. Problems can arise from hardware issues or the firmware installed on the television.

How do you fix a blinking green light on a Sharp TV?

Unplug set, press and hold (on set) volume-down and channel-down and hold them while pluging in set. Will come on with "k" on screen, or will crash again if backlight bad. If it stays on, use your remote and arrow right then look for "fact init" and any other reset and turn them on.

How do you reset a Sharp TV that wont turn on?

For a hard reset:

Unplug your TV.

Press and hold the "Channel Down" and input" buttons on the panel.

Plug the TV back while holding down these buttons. ...

Keep holding the buttons until the TV powers back on. ...

Use the remote to navigate the "Service Mode" menu and select "Factory Reset" from the menu.

https://www.fixya.com/support/t470552-aquos_lc37d40u_blinking_light_turn

80% chance of fix, elese it required to be reapired !

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