Question about Sharp Aquos LC-42D62U 42 in. LCD HDTV

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Brightness control I bought a the Sharp Aquos 42 inch from Sears in March. I noticed that the brightness would flicker from dark to light (back and forth)during a night scene. It's bad enought that it makes me dizzy and when it's dark I can't see anything. Sears tried to repair the set but couldn't, and then replaced it with the same model. The second set is doing the same thing. I called Sharp and they sent me an authorized repairman. He took the TV into the shop and the next day I was informed that unfortunately that's how this model is and there is nothing they can do. I can't accept this form a $2,000 TV. They said that's from the brightnesss control which unfortunately can't be turned off. When I turn on the OPC feature the screeen just goes dark and dull. The technician from Sears and from Sharp agreed thet the picture was too dark and they both saw it flicker from dark to light and back to dark (over and over), yet they said that no one else has complained. I find this hard to believe. Is there anyone else out there with this problem? I know it's not just me--my family, friends, and 2 technicians saw the problem. If someone out there has a solution--great. Otherwise I have to start fighting with Sharp and Sears on Monday. I wish I bought a Samsung.

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  • Anonymous Nov 18, 2007

    I bought Sharp Aquos 52" in Costco. Picture is great, but night scenes are too dark, sometimes completely black and the screen is flickering up and down. I haven't complained yet thinking it can be adjusted, but it seems I can't do anything. Any advice?

  • Anonymous Nov 18, 2007

    I bought Sharp Aquos 52 inch in Costco in September. Picture is great but night scenes are too dark and it is flickering up and down. I haven't complained yet, thinking it can be adjusted, but can't do anything. Any advice?

  • Anonymous Dec 11, 2007

    I have the exact same problem. Sharp 42" LCD 1080P 60MHZ, 4MS response. I just got my set and am giving it back!!!!!!!!!! pissed.

    You can use me as a reference:
    Salim Janmohamed, Vancouver BC

  • mikegreenz Dec 17, 2007

    I have the same issue - they said to disable the OPC function (menu- picture - OPC on/off) but i think i've tried that and it hasn't helped.

    i get a headache trying to see low-light scenes.

  • jc2007 Dec 29, 2007

    I bought a 42" but the 43u version and I'm having the same problem. It even flicker when changing channels.

    I love the TV and I don't want to be forced to return it. Help.

  • Anonymous Jun 07, 2008

    i'm having the saaaame problem. it's retarded.  the 'hack works" but what a joke. i shouldn't have to jimmy this TV into working.

  • Anonymous Jun 07, 2008

    i'm having the saaame problem.  ridiculous. nauseating! i did the 'hack' but that's ridiculous that i'd have to jimmy my TV into working.

    • OPC = Off -> dims in and out.

    • OPC = On -> almost too dark to watch.

    anger! rage!

  • Anonymous Jul 28, 2008

    i had the same problem but the technician did not accept it, and said it is normal. i regret why i didnot buy a sony X model.

  • rmpkfp Oct 26, 2008

    I have the same problem when the channel is changed and the set goes form a bright to dark background. the entire picture darkens during a scene with dark background and the lightens when the background goes to a bright background. During the credits for a movie the screen darkens greatly. Sharp sent a tech to install software that was supposed to fix the problem. It did not. The tech called sharp and sharp suggested that we turn on the opc. With the opc on the TV is fine but you must adjust the contrast and sharpness. I bought the TV at Sam's Club for $868.00 last November as a one day special. I will purchase Sharps extended warrenty for 3 years. My 40" Sony works perfectly. I doubt that I'll buy another Sharp

  • camaral3 Dec 28, 2008

    dear friend we have the exact same problem and it drives us nuts im sure everyone else with same model t.v. has this problem with the picture going from light to dark. night time scenes are impossiable to see. our sharp aquos 42 inch sucks!!!!!. if enough owners complain im sure something will be done hopefully?.

  • maggiesowner Jan 02, 2009

    We have the same annoying 'dark-light' issue posted. Frustrating. I did call the service people soon after purchasing, waited 35 minutes on hold/music and did not get anyone to really assist me with the problem. We tried the OPC on/off but to no avail. We thought it was part of a problem with a new DVD player we purchased at about the same time. We recently purchased another component and in the process of reconnecting everything, decided to try again to figure it out. WE DID IT!!!!!!

    The OPC does need to be OFF. And then the brightness adjusted as well. Not eve sure what else we did but it can be fixed. Sharp should have done a better job.

  • Anonymous Mar 08, 2009

    Sharp sucks!! dark light dark light...brutal!

  • jimmbbo Apr 20, 2009

    Have had a 26" Aquos for a couple of years in my bedroom (bright ambient light), never encountered this problem.

    Upgraded to a 32 inch (non Sharp), moved the 26 to the office (darker), and suddenly this glitch pops up... Tried all the "tryable" solutions, but
    the additional menus are limited - unable to find a OPC Off off or Adjust capability in any Picture menu, regular or "Advanced"... Minimized the effect by darkening the picture, but that is not a good solution, and will only keep me from throwing a brick at it for a while ;) Any further info would be helpful.



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I have a 46" aquos and i had this problem on the first day i called and everything! but everyone said just to return and exchange but im pretty sure i will ge the same result i played around and i turned OPC "on" and it stopped flickering and stays stable butttt its really dark during night scenes. i love this tv so even though the night scenes are garbage im keepin it!

Posted on Nov 20, 2007

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Some possibly useful information here, I'm going to save this page, try a few and see how it goes. Many thanks to all the posters. :-)

Posted on Dec 26, 2014

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One more idea

After a couple of years of normal operation, I moved my Aquos from the bedroom to the office, and it started the brightness flickering. Reset all the menu options, no luck. It also had 60hz ground loop bands rolling up the screen.

Installed an inline Cable Isolator w/ Spike Protection, problem solved. $12.25 delivered in the US,

The discovery is that apparently the flickering can be caused by a 60 hz ground loop, and the isolater fixed both problems.

Posted on Apr 27, 2009


just played around with it and figured it out:

Go to

- Select your Backlight settings (mines at 16, brightest) and turn OPC ON! I REPEAT, OPC ON.

next, go to
>>>Advanced (still under picture tab)
>>>Range of OPC
----Turn both tabs as far to the RIGHT (making it brighter) as you possibly can. This should fix everything!


Posted on Jan 26, 2008

Try going to the advanced menu and switch off the active contrast control. that should help alot

Posted on Jan 05, 2008

Looked at page 37 of the operation manual. Think this feature is called "enhanced picture contrast". Depending on the AV mode selected, feature is on or off. Selecting movie, game, pc, user will turn this feature off. OPC looks at the light in your room. By the way, with opc on, my cable remote control won t let me change channels due to interferences!!! Weird....

Posted on Dec 30, 2007

Had the exact same issue.
How stupid is that?? darkening dark scene and brightening light ones, it probably makes contrast ratings go higher but the viewer can't see anything!

Anyway, the solution should be to put the av mode to "user". In this mode, opc is disabled by default, and it is actually enforced, whereas in other modes it is always on.

Posted on Nov 18, 2007

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I used to have the same brightness problem.  I have Bell Express Vu (Hi-Def) and would replay the same piece of recorded video to see if the issue always happened at the same spot.  It wouldn't.  It doesn't seem tied to the video source.

It seems I no longer have this problem as the screen now just goes to black.  The power is still on.  I get nothing from the other video source I have connected either.  I also tried to pull up the menu since it shouldn't require a video source at all.  Still nothing.  This problem is intermittent as well.  Sometimes it's only out for a few seconds, sometimes for minutes.

Posted on Oct 29, 2007


Posted on Oct 13, 2007

Hi, My Sharp LCD tv also has the same problems you are experiencing. A sharp technician was able to minimize the brightness problems (but not eliminate it) by accessing the service menu on the TV. As your local Sharp tech if he can do the same for you.

Posted on Sep 20, 2007

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There in NO OPC Solution, No tech nor Sharp will be abel to do anything. Any one who bought Sharp TV, expect very poor service and no solution to OPC problems on any size SHARP. Face it folks Sharp sucks!!! SONY is the best bang for your buck.

Posted on Apr 19, 2008

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