Try changing source or input
More than likely, you have the same problem I am experiencing - one or more of the backlights (LEDs) have failed. When one fails, they all fail. The process of replacing the backlight(s) are all over Youtube. It is a detailed and delicate procedure to remove the TV's screen. Once you uncover the LEDs, you must replace the failed lights. The tricking part is identifying the failed LEDs and then ordering the correct ones to replace. Good luck. I am in the process of tearing into my TV right now.
Please checked LVDS cable is fix properly or not. Remove cleaned and refix.
SOURCE: TV No Picture
My 32D40U would turn on for 5-10 seconds (Please Wait would appear) and the screen would go black. Sound Normal. It would also sometimes do this after running 5-10 minutes. I read somewhere that the inverter board would come loose and lose proper ground. I took the set apart, removed the board, and cleaned up the grounding points. I reassembled using some copper paste on the ground points and LockTite on the screws. I used some contact cleaner on all the connectors going to the board. I noticed two cables that are covered with copper shield tape where too tight at their connectors and repositioned the tape to give them some slack. The problem hasn't occurred since the fix.
In most cases, you can reset the TV by leaving it unplugged for 30mins.
If this doesn't work, I believe the circuit board that supplies power to the screen maybe bad. They call this board a backlight inverter board. It would most likely cost more to repair than replace the TV .
SOURCE: Sharp Aquous will not turn on.
I would check the System Cable that is linking the box to the TV. Then, press the small button called CLEAR in the front of the box. The button should be behind the flip cover on the front right below the PC input ports.
Let me know if this solution works.
SOURCE: no picture no sound opc light and power light
This is very common in sharp tvs.U turn it on.U get power on light stable right?U hear a click,one or twice,sometime tv is good right?Sometime POWER light and OPC light flashes?Push the power button on/off couples times will work, picture will come on.If keep trying off/on couples time after POWER and OPC flashes,don't ever stop and never get backlight and picture.Ur Video backlight board is dead must replaced.
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