Samsung UA40D6600WR LED disable auto dimming - AVS Forum
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post #1 of 37 Old 11-22-2011, 02:08 AM - Thread Starter
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Hi Everyone,


Recently I bought new Samsung UA40D6600WR LED 3D tv.I want to disable auto dimming option on service menu. When I entered in to service menu i didn't find advanced menu option in the service menu.

In service menu I am getting the below submenu's only

Option
Control
SVC
Expert

Please help me to get into Advanced menu option.

Thanks in advance
mymacin
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post #2 of 37 Old 11-22-2011, 08:02 AM
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Quote:
Originally Posted by mymacin View Post

Hi Everyone,


Recently I bought new Samsung UA40D6600WR LED 3D tv.I want to disable auto dimming option on service menu. When I entered in to service menu i didn't find advanced menu option in the service menu.

In service menu I am getting the below submenu's only

Option
Control
SVC
Expert

Please help me to get into Advanced menu option.

Thanks in advance
mymacin

unfortunately you can't; if an advanced menu still exists on the 2010 C models and this years D models, no one has figured out how to get in there

I have a similar problem with my LN32D550 and haven't been able to fix it. However, try maxing out shadow detail in the user menu to +2. This helps minimize the auto dimming on my LN32D550.
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post #3 of 37 Old 11-25-2011, 11:48 AM - Thread Starter
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Thank you for the information PlasmaPZ80U
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post #4 of 37 Old 12-06-2011, 11:33 PM
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Quote:
Originally Posted by mymacin View Post

I want to disable auto dimming option on service menu.

hi!
May I know why you'd want to disable auto-dimming? Will it help with the TV's longevity?
Thank you
Regards,
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post #5 of 37 Old 05-17-2012, 12:01 AM
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Anyone have any luck with this? I just got myself a UN46ES6500 and can't access the advanced service menu to turn off the auto dimming. This auto dimming crap is driving me nuts!
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post #6 of 37 Old 05-17-2012, 07:13 AM
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Quote:
Originally Posted by User_3D View Post

Anyone have any luck with this? I just got myself a UN46ES6500 and can't access the advanced service menu to turn off the auto dimming. This auto dimming crap is driving me nuts!

trying maxing out shadow detail in the user picture menu, advanced section

this might minimize the dimming with everything but a completely black or blank screen
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post #7 of 37 Old 05-17-2012, 09:50 AM
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I do not find a setting for shadow detail under the Picture > Advanced section. Could this possibly be called something else?
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post #8 of 37 Old 05-17-2012, 10:28 AM
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Quote:
Originally Posted by User_3D View Post

I do not find a setting for shadow detail under the Picture > Advanced section. Could this possibly be called something else?

are you using movie mode?

also, turn off dynamic contrast, motion lighting, energy saving, and eco sensor
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post #9 of 37 Old 05-17-2012, 12:14 PM
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Quote:
Originally Posted by PlasmaPZ80U View Post

are you using movie mode?

also, turn off dynamic contrast, motion lighting, energy saving, and eco sensor

No I'm not using movie mode and it's not there when I'm using it either. All those other things are already turned off.
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post #10 of 37 Old 05-17-2012, 02:01 PM
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Quote:
Originally Posted by User_3D View Post

No I'm not using movie mode and it's not there when I'm using it either. All those other things are already turned off.

do you still get the auto-dimming in movie mode?
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post #11 of 37 Old 05-17-2012, 09:09 PM
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Sounds like This may not be A US model Samsung LCD
RE:I do not find a setting for shadow detail under the Picture > Advanced section
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post #12 of 37 Old 05-17-2012, 10:54 PM
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Quote:
Originally Posted by PlasmaPZ80U View Post

do you still get the auto-dimming in movie mode?

Apparently not. But the contrast is horrible and I can't get it to calibrate correctly.

Quote:
Originally Posted by cinema mad View Post

Sounds like This may not be A US model Samsung LCD

The TV was purchased from my local Best Buy.
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post #13 of 37 Old 05-18-2012, 09:43 AM
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I found the following on the Samsung website regarding a different model, but it worked on my 60" 6420 unit:

"Setting Shadow detail into the negative (-) direction makes the TV dim more for darker images.

Setting Shadow detail to 0 disables the auto dimming.

Setting Shadow detail into the possative (+) direction makes the TV brighten the darker images."

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post #14 of 37 Old 05-18-2012, 12:07 PM
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Quote:
Originally Posted by User_3D View Post

Apparently not. But the contrast is horrible and I can't get it to calibrate correctly.



The TV was purchased from my local Best Buy.

movie mode is the best starting point for calibration
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post #15 of 37 Old 05-18-2012, 11:02 PM
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Quote:
Originally Posted by PlasmaPZ80U View Post

movie mode is the best starting point for calibration

using a calibration disc the contrast is still too dark even at 100.
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post #16 of 37 Old 05-19-2012, 12:39 AM
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Quote:
Originally Posted by User_3D View Post

using a calibration disc the contrast is still too dark even at 100.

Raise the backlight control 1 or 2 ticks. Movie mode is correct for best performance.

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post #17 of 37 Old 05-19-2012, 11:39 PM
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Quote:
Originally Posted by TomHuffman View Post

Raise the backlight control 1 or 2 ticks. Movie mode is correct for best performance.

Backlight is maxed out.
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post #18 of 37 Old 08-07-2012, 12:32 PM
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This is pic from service manual for 2012 Samsung ES series.

Can someone discover if it works and autodimming can be switched off ??? (I am scared to do it by myself and brick my TV - 40ES6710)....




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post #19 of 37 Old 08-07-2012, 12:50 PM
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Quote:
Originally Posted by prsut View Post

This is pic from service manual for 2012 Samsung ES series.
Can someone discover if it works and autodimming can be switched off ??? (I am scared to do it by myself and brick my TV - 40ES6710)....

use movie mode, on some Samsungs this disables the auto-dimming backlight (but not all)
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post #20 of 37 Old 08-08-2012, 01:33 AM
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Hey,

I have exprienced a somewhat similar thing with my PS50A550 plasma. I did send an email to Chromapuresupport a few days ago but have not received a response yet. Perhaps I have the same dimming problem? This is the email I send:
Quote:
I have a question regarding calibrating the colors of my samsung PS50A550 using cromapure and the CMS. It seems that if I repeatedly measure a color, the luminance drops. The hue and saturation remains stable. I was wondering if its the tv or the meter. The luminance drops and then stabalises. If I switch pattern and remeasure, the luminance stays at its lowest point, making me think its the meter. However, if I do a complete sweep, starting with white, the luminance of the colors has risen again, but not to the same height as with my first sweep. I do measure white like 7 times too at the beginning of the sweep. I measure colors using the AVS709 dvd from the avs forums, using 75% colors.

Should I measure until stable, or just go with the first measurement? Oddly, when I use "continues" measuring it doesn't seem to drop?

I have now found out it is not the meter or the software, as my brothers LG Led tv does not have the same luminance drop. It is kind of annoying because I do not know what to measure, the luminance immediatly as the pattern appears, or wait the 10 or so seconds until the luminance becomes stable. Will my tv do the same thing when playing actual video footage, will it drop luminance when a long shof of the same scene is displayed or not?
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post #21 of 37 Old 08-08-2012, 10:03 AM
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What do you mean by the statement 'Contrast is too high." That doesn't make any sense. With the backlight set to the highest setting, you should have WAY too much light output from the panel.

Are you using a meter or are you setting things by eye?

You really CANNOT lose shadow detail if you have the Brightness control set correctly. You need a test/setup disc with a PLUGE pattern or with digital levels of 0-25 or 16-25 or thereabouts. You should be just barely able to see step 18... step 17 may or may not be visible, and step 16 should be just as black as the black background around all "test patches" from the disc.

During all this you should be using Movie mode. I would start with Backlight somewhere in the middle of the range when you adjust Brightness. Set the Shadow control to 0. Contrast (the control) should then be set to produce about 35 fL in a dark room or around 55 fL in a brightly lit room. If you don't have a meter, this is going to be a guess... the level in a dark room should not make you squint when you display a bright white (100% white) pattern in a dark room. If you are squinting, you are going to have eye-strain from brighter movies -- and avoiding eyestrain is the whole purpose of setting the 100% white level to 35 fL using the Contrast control. (The Contrast control really does not set "Contrast" it sets white level... the amount of light the TV products when you display a 100% white pattern). And the Brightness control does set "brightness" it sets the black level.

You also need to be sure you aren't setting the source components to RGB 0-255 while the TV is working in RGB 16-235 which will cause a huge loss of shadow detail. Your sources should be in YCbCr 4:2:2 and the TV should be in YCbCr mode also. This will insure you are using 16-235 all the time for all sources. If your cable or satellite box has no setting and it only outputs RGB, it SHOULD be outputting RGB 16-235 (but you never know if there's no setting in the box's setup menu) so if you feel like you have good shadows for Blu-ray but not for cable/satellite, you can try setting the TV to RGB 0-255 to see if shadows look more natural.

It sounds like you are wrapped around an axle here... and going back to the basics may get you out of it. If your black level (digital 16) is not correctly set, you will NEVER... NOT EVER... get the TV to have proper/good shadow detail. The control that does that is the Brightness control. Backlight dimming will NOT remove shadow detail... dimming WILL make shadows darker and whites brighter... when dimming is well-implemented, it is often actually a GOOD feature. The other thing that affects shadow detail is whether you are using RGB or YCbCr mode and if you are using RGB, that you are using the CORRECT VERSION of RGB... 0-255 is usually for computer sources... though some source components can be set to output 0-255. RGB 16-235 is the "normal" RGB mode for consumer video sources. However, Blu-ray discs are encoded with YCbCr and the least amount of processing within your system will be done if the disc player and TV are both in YCbCr 4:2:2 mode (4:4:4 may be an option but it is unnecessary... you send a lot more data in that format, but it doesn't add anything to the images).

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post #22 of 37 Old 08-08-2012, 10:36 AM
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Quote:
Originally Posted by Doug Blackburn View Post

Backlight dimming will NOT remove shadow detail... dimming WILL make shadows darker and whites brighter... when dimming is well-implemented, it is often actually a GOOD feature.

The poster was referring to an auto-dimming backlight 'feature' that dims the whole backlight at once based on the APL of the scene at any given moment. Since this is global dimming, not local dimming, it doesn't improve ANSI contrast ratio and just dims all shadow detail and everything else in darker scenes. So, the 'feature' is not desirable to many and that's why those people want to disable this thing completely (although on some Samsungs, it is still active in movie mode and can only be minimized by cranking the shadow detail control all the way up... this varies from model to model, though... so the shadow detail control may affect low-end gamma on some sets and auto-dimming intensity on others).

I had this issue on a Samsung LND550 LCD last year and movie mode did not disable the auto-dimming. Setting shadow detail to +2 helped a lot though, by stopping the auto-dimming on everything short of a blank/completely black screen. However, this issue bothered me enough that I eventually returned the set (though other issues also affected that decision).
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post #23 of 37 Old 08-08-2012, 12:39 PM
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I found the option "Dyna Dim" in my service menu, but it was already set at "off". Beneath it there is a setting "Dyna CE" which is set to "on". Does anybody know what this is and if I can turn it off without risk? I would guess it is dynamic contrast?
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post #24 of 37 Old 08-08-2012, 02:10 PM
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Yes.
You are absolutely right!
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post #25 of 37 Old 08-09-2012, 12:17 AM
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Does setting Dyna CE in the service menu do something with the dynamic contrast? Or does it just gray out the "on/off" setting of dynamic contrast that is already present in the user menu?
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post #26 of 37 Old 08-09-2012, 02:19 AM
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My TV Samsung 55B7000.
Service menu (advanced)
CE_DIMMING:
Conrast Dimming - OFF
Dimming in Standard - ON (did OFF)
Dimming in Movie - ON (did OFF)

checked on the patterns (with and without APL) - all right (disable auto dimming)!
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post #27 of 37 Old 08-09-2012, 10:13 AM
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Quote:
Originally Posted by anta1974 View Post

My TV Samsung 55B7000.
Service menu (advanced)
CE_DIMMING:
Conrast Dimming - OFF
Dimming in Standard - ON (did OFF)
Dimming in Movie - ON (did OFF)
checked on the patterns (with and without APL) - all right (disable auto dimming)!

disabling CE dimming/auto-dimming was never an issue on the B series models... it's an issue on the newer ones (C, D, E)

though it's still worth a try on the E models
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post #28 of 37 Old 08-09-2012, 10:14 AM
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Quote:
Originally Posted by Wouter73 View Post

Does setting Dyna CE in the service menu do something with the dynamic contrast? Or does it just gray out the "on/off" setting of dynamic contrast that is already present in the user menu?

it may just do the latter (based on my experience with the D models), but it can't hurt to try

which model year is your TV?
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post #29 of 37 Old 08-09-2012, 11:57 PM
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I found a review saying it will be released may 2008, so I guess 2008 but can't really remember myself tongue.gif.
Its a Samsung PS50A550 plasma.
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post #30 of 37 Old 08-10-2012, 10:30 AM
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Quote:
Originally Posted by Wouter73 View Post

I found a review saying it will be released may 2008, so I guess 2008 but can't really remember myself tongue.gif.
Its a Samsung PS50A550 plasma.

the issue we're talking about is on LEDs/LCDs only... so whatever is going on your plasma might be different (as it has no backlight)

you may or may not find a way to disable the dimming you describe in the service menu... it could be related to the ABL, which is by design and can't be disabled
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