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Visitor
Drude
Posts: 8
Registered: ‎10-28-2010

Adaptive Contrast causing issues: NS-42E570A11

Hello,

 

Just purchased my new Insignia, and I'm generally happy.  I think the TV has a beautiful picture, but I'm having one picture issue that I just can't solve.

 

I have been playing with the picture settings for nearly a week now and have it looking really good, except that in certain shows / scenes, the contrast will 'flicker' or switch back and forth from a proper, deep black to a greyish cast.  If I turn off Adaptive Contrast, that flicker goes away, but so do all of my contrast settings.  The picture then looks washed out with no real contrast.  If I try to do the contrast and brightness, etc on my own, I get muddy blacks, 'crawling moss' effect and false contouring, no matter what I do.

 

So, the Adaptive Contrast setting is, in theory, great.  When it's on I get a fantastic picture, but I have to put up with the flicker.  If I get annoyed with the flicker (and I am more so all the time), I have to attempt to get the same image quality by playing with the settings, and nothing comes close.

 

As far as I'm concerned, this is an issue.  It's making me consider taking this set back and buy another brand of LED, despite how much I like this TV.

 

By the way, I have the Dynamic Contrast Ratio turned off (because it's incredibly annoying to watch a TV that gets brighter and dimmer all the time - seriously, does anyone actually use this setting???), my Brightness and Contrast are set around 50, I have noise reduction set to LOW and I watch everything in 24p Film Mode, if that helps.

 

Anyone else having this issue?

Any official response / opinion?

Anyone have any 'ultimate calibration settings' for this TV that they'd like to share?

 

Thanks!

Visitor
Drude
Posts: 8
Registered: ‎10-28-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Bumping this so it doesn't get lost...

 

any help here?

 


Visitor
Drude
Posts: 8
Registered: ‎10-28-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Bumping!!! :-(

Visitor
Drude
Posts: 8
Registered: ‎10-28-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Bumping one last time.  No response from an Insignia Rep by tomorrow and the TV goes back to the shop... and I buy a different brand.

Insignia Product Specialist
Guille-INSG
Posts: 905
Registered: ‎09-15-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Hello Drude,

Welcome to Community@Insignia™!


First of all, let me apologize for the delay in getting back to you. We are experiencing a high volumen of posts right now.

 

In order to be able to find out what could be the issue with the "Adaptive Contrast" feature of the TV it is very importante that you tell me which is the connection that you are using (HDMI, Component, RCA, antena or VGA), what kind of device you are connecting the TV to and if this happens every time that you are trying to use an INPUT with the "Adaptive Contrast" enabled.


Meanwhile, until you provide me this information I will get in contact with our engineering team so they can start trying to duplicate the issue, but we will still need that information so know exactly what can be causing this.

I hope to hear from you soon


Thank you,
Guille
Insignia™ Support Team

Visitor
Drude
Posts: 8
Registered: ‎10-28-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Hello Guille!

 

Thanks for the response...

 

I have an HD-PVR hooked to the TV using HDMI cables.  I am currently going through HDMI 1 but I've tried all of the inputs: same problem.  I also tried swapping the cables for new ones: same problem.

 

Additionally, I have a Blu-Ray player hooked up with HDMI and the 'flickering' also occurs here as well, although it is somewhat less extreme.  I also have a game system (Wii) hooked up through component cables.  The issue occurs here as well, though not very often, as the graphics in games tend to be very high-contrast.

 

The 'flicker' I described is more accurately a random brightening and dimming that doesn't affect the entire screen, just areas of low contrast.  A good example is a foggy scene or a grey wall.  It's as if the TV is fighting to get the right contrast levels and so it just starts flickering.

 

How I realized the issue was being caused by Adaptive Contrast is that when AC is switched OFF, the issue immediately stops.  Unfortunately, the great picture also goes away.  I have used 4 different calibration discs to try to get the picture right, and this set really needs that Adaptive Contrast to be on to achieve good blacks and detail.  I assume that Adaptive Contrast controls the Gamma in some way, because there are no Gamma adjustments available through the user menu.

 

I was in Best Buy this afternoon looking at the same model TV that I have.  They had the Adaptive Contrast ON and there was no flickering, though everything they were showing was quite bright and high-contrast.

 

Here are my settings, if it helps:

 

Brightness 50

Contrast 50

Color 45

Tint 0

Sharpness 5

Adaptive Contrast ON

Dynamic Contrast Ratio OFF

Backlight 20

Color Temperature COOL

Noise Reduction OFF

Insignia Motion 24P FILM MODE

 

I use the same settings more-or-less on all inputs except Component has GAME MODE ON

 

So thanks again for the reply, I hope we can figure it out!

 

-Drude

 

 

 

Visitor
Drude
Posts: 8
Registered: ‎10-28-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Bumping so it doesn't get lost.  I have until this weekend to return the TV guys... wondering you've managed to duplicate the issue...

 

thanks!

Insignia Product Specialist
Guille-INSG
Posts: 905
Registered: ‎09-15-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Hello Drude,

Thank you for the information that you provided!

 

Here are some tips that may help you improve the picture quality :

 

1. Make sure to TURN OFF  Game Mode and Insignia Motion 24P Film Mode and Noise Reduction.

2.  Raise a little bit the value of the Backlight, let´s say up to 30.

 

If you still cannot get the same picture you saw in the same TV at the store, please take the TV to the local Best Buy for one of our technician to check on your TV and if needed make use of the return policy you specified you are about to exceed.

 

If it was useful, and you liked it, Kudo it!

Thank you,
Guille
Insignia™ Support Team

Visitor
Drude
Posts: 8
Registered: ‎10-28-2010

Re: Adaptive Contrast causing issues: NS-42E570A11

Hi Guille,

 

I only have Game Mode on on the Component Input which I use for my game system.  It is OFF on all other inputs.

 

I also already mentioned that I have Noise Reduction turned off.

 

Also, I WANT the 24P film mode to be ON, as I don't like the other motion settings.  They make movies look too unrealistic.

 

Turning up the backlight to 30 only makes the set brighter, but does not improve the picture.

 

You haven't answered whether your technicians were able to reproduce this issue... should I assume it happens on all of these TVs?

 

Looks like it's going back to the shop and I will buy another brand of television.