2014 LG THREAD - Page 43 - AVS Forum | Home Theater Discussions And Reviews
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post #1261 of 1396 Old 12-07-2014, 11:05 PM
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I was watching Once Upon a Time tonight on my new LG 50LB6300, and noticed during the credits that the black background was changing in brightness as each set of credits was appearing.

Immediately I thought I must have had Dynamic Contrast on or something, but I double-checked and that was off (along with pretty much any enhancement that I could think of. Black Level is set to "Low" as well.

Any ideas?

Edit: Ok, if I would have searched this thread I would have noticed it's probably the Global Dimming issue. Noticing it between black screens leading to / from commercial breaks.

Last edited by Devhux; 12-08-2014 at 06:54 PM.
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post #1262 of 1396 Old 12-09-2014, 06:11 PM
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Quote:
Originally Posted by crazyitalian1988 View Post
Has anyone had their TV's back light turn off during a dark scene and then not turn back on. Essentially, the screen goes black and the audio keeps playing. If I shine a light into the screen I can see the Webos menus very dimly. I've had LG replace the screen, power supply and computer. While its intermittent (usually on a very dark scene or a quick fade to black), I was able to replicate it on an LG commercial. I can post a video tomorrow if it's helpful.

I plan on contacting the tech I've been working with tomorrow morning. I'm thinking the options will be a new set or a refund.

Also note that this happens on multiple inputs. I've seen it on my chromecast and on cable.

I had/have this exact issue and sent a video to LG tech support explaining the issue. The tech just said I had to get the tv serviced but I'm skeptical, and also very reluctant to do the servicing since it's such a pain in the behind. The temp solution was to turn the set off and turn it back on again. I found the xbox really triggered this issue.

I do have an update though. A couple weeks ago I went into the menus and played around with a bunch of the settings, and since then, I have yet to have this problem occur. I have no idea which setting did it, or even if it's fixed, but I know I set black level to low, turned off trumotion, and bumped up the default brightness.
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post #1263 of 1396 Old 12-10-2014, 01:13 PM
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Local Dimming - Settings does not apply

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Originally Posted by crazyitalian1988 View Post
Hmm, does global dimming cause the LG menus to cut out too? Here's a video of my issue. (removed link)
Been having strange dimming issues too. Seems worst if you set Local Dimming to any settings. The TV stops to remember the setting set. Usually you have to set it to Off on all profiles, then turn off the TV (maybe unplug TV too might help, but resets the time). Irritating, because some scenes would start to become darker and darker, when it shouldn't.

One time the screen went black for various duration and random times. When the tech came to look at the Network issue, we concluded it was related to the HTS (Home Theatre System) since after connecting other devices straight to the HDMI port without going through the HTS, the issue no longer appeared.

Recently, audio has been acting up on the HTS. Sometimes the TV sends the audio signal (on Optical port), sometimes it doesn't. An example, watching a video on YouTube and Video on DeviceShare. When return to YouTube, the audio would stop or vis-versa. Sometimes going to the Audio settings and changing them recovers it, sometimes going back and forth works.

For a new TV, I'm not impressed. Also difficult to diagnose because the symptoms are difficult to reproduce.
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post #1264 of 1396 Old 12-10-2014, 08:13 PM
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Anyone have any calibration settings for the 55UB9500 or 65UB9500 ? Cannot find any online.
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post #1265 of 1396 Old 12-12-2014, 11:16 PM
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For those with the Global Dimming issue, it looks like the culprit is a setting in the service menu.

While I don't know how to access the service menu directly on my LG 50LB6300, I found an app for my phone called "LG Service Menu Explorer" that uses the IR port on my Note 3 to access it. It's an $8 app, but I figured I'd try it.

In Service Menu 1, I found a Dimming option highlighted in the screenshot. After finding a point in a TV show where I could trigger global dimming easily, I chanced it and turned the dimming option off here. The good news is that it worked! The back light no longer dimmed (or turned off) on a dark/black background. Bad news? The setting doesn't stick once the TV is turned off.

I could probably try making a video to show this. Of course I don't suggest messing with the service menu in case something goes wrong, but perhaps pressure could somehow be put on LG to let this setting be user-adjustable
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post #1266 of 1396 Old 12-14-2014, 08:17 PM
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Got my hopes up for possibly nothing. Looks like that setting also disables the backlight from being dimmed in the regular picture settings menu.
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post #1267 of 1396 Old 12-15-2014, 05:45 AM
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I don't have mine set up to auto update. Did anyone update the newest software? I think it's 04.02.03? (LG 60LB6100)
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post #1268 of 1396 Old 12-15-2014, 11:17 AM
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Originally Posted by moparbob7 View Post
Thanks for thinking of me buddy

I have the same problem also. It is not global dimming with this issue but it might be related to it. Every now and again mine does the same thing but it does it anytime not just on a dark scene.

The backlight just goes out and if you shine a light on the screen and bring up the menu you can see it. I always have to turn off and back on the TV to fix this. It is another defect in this line of TV's. I have had this happen on 2 sets now. It did not happen until they updated the firmware for the first time. I think it is a firmware issue but if you ask them they have no idea.

Please let me know what happens to yours and if you get it fixed.

Thanks
I'm having the exact same issue as you guys.... I also have the 60LB7100. Backlight goes out and I can see a very faint menu if I shine a light on the screen. However, turning the TV off and back on doesn't fix it for me. The technician came and replaced the power supply which seemed to work for a few minutes and then the backlight just died again. Still won't work after turning it off and back on multiple times.

Please keep me updated if you guys find a solution! The technician is going to come out and replace the power supply again but I don't know if that'll fix it if the issue is elsewhere...
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post #1269 of 1396 Old 12-16-2014, 05:03 PM
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I'm starting to think that everyone is having the global dimming issue, except some don't realize it. I think it's just a feature on every LG set that doesn't have local dimming, so they use the global dimming to make up for it. Both my original and replacement model lb5800 tvs have this and they were both manufactured at different time periods. I got my lb5800 from Walmart.
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post #1270 of 1396 Old 12-17-2014, 03:24 AM
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Quote:
Originally Posted by Devhux View Post
For those with the Global Dimming issue, it looks like the culprit is a setting in the service menu...

Jumped in here to see if anyone with a 2014 model had had a breakthrough defeating this dread feature only to see that it is still the bane of many LG owners' existence. I have an LA6200--a 2013 model--which is also afflicted with "global dimming." I can't overstate how frustrating it is to get this otherwise fine unit looking absolutely fantastic at an optimally calibrated level only to have global dimming roll that back light back in low light scenes, introducing black crush and resultant detail loss, throwing off all the careful adjustment. What's the point of supplying consumers with a full array of fine tuning tools if global dimming makes it all moot?

Staying tuned to this thread in hopes someone, someday, finds the secret key to success. Worst case scenario would be if this is in the circuitry and it can't be addressed through firmware updates or a service mode tweak, but I live in hope... It's got to be in there, somewhere!
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post #1271 of 1396 Old 12-17-2014, 05:26 AM
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Quote:
Originally Posted by JackN View Post
Jumped in here to see if anyone with a 2014 model had had a breakthrough defeating this dread feature only to see that it is still the bane of many LG owners' existence. I have an LA6200--a 2013 model--which is also afflicted with "global dimming." I can't overstate how frustrating it is to get this otherwise fine unit looking absolutely fantastic at an optimally calibrated level only to have global dimming roll that back light back in low light scenes, introducing black crush and resultant detail loss, throwing off all the careful adjustment. What's the point of supplying consumers with a full array of fine tuning tools if global dimming makes it all moot?

Staying tuned to this thread in hopes someone, someday, finds the secret key to success. Worst case scenario would be if this is in the circuitry and it can't be addressed through firmware updates or a service mode tweak, but I live in hope... It's got to be in there, somewhere!
I'm pretty sure a software update could probably fix it. TruMotion is also part of the circuitry, and I've read somewhere that the feature wasn't available on a certain model until there was a software update, so I don't see how they couldn't disable something as well or at least make it a setting to adjust or turn off.
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post #1272 of 1396 Old 12-17-2014, 07:34 AM
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Trust me, I was so excited when I found the setting I did (then immediately thought "No one will believe a guy with 4 posts would have solved a years-old complaint."

Well, sadly the latter was true, but I won't give up hope. Don't even know what made me actually want to see what was in those menus, but I know I won't touch most of them as do understand it can be very dangerous to mess around.
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post #1273 of 1396 Old 12-17-2014, 02:52 PM
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Originally Posted by Devhux View Post
Trust me, I was so excited when I found the setting I did (then immediately thought "No one will believe a guy with 4 posts would have solved a years-old complaint."

Well, sadly the latter was true, but I won't give up hope. Don't even know what made me actually want to see what was in those menus, but I know I won't touch most of them as do understand it can be very dangerous to mess around.
Oh go ahead do it. Who doesn't want purple poptart poltergeists popping out of their TV?

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post #1274 of 1396 Old 12-17-2014, 04:01 PM
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Oh go ahead do it. Who doesn't want purple poptart poltergeists popping out of their TV?
Well, as long as I don't let the magic smoke out, right?

Truth be told, considering this is my first TV I've actually purchased for myself, I want to try to make it work as long as I can. Aside from the global dimming issue, I absolutely love it!
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post #1275 of 1396 Old 12-17-2014, 08:15 PM
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I have the LG LB5550 49" 1080p 60Hz Class LED HDTV. I haven't seen one instance of global dimming. Believe me I have watched enough videos from many peeps post on here so I know what to look for its unmistakable. So far so good. I absolutely love my TV. I am very happy.
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post #1276 of 1396 Old 12-22-2014, 05:51 PM
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Hi

Which one is better between 60LB6100 and 60LN5750 ?

Thanks
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post #1277 of 1396 Old 12-22-2014, 11:24 PM
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Hi

Which one is better between 60LB6100 and 60LN5750 ?

Thanks
FYI. One is discontinued. The LB6100 is a 2014 model. The LN5750 is a 2013 model.

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post #1278 of 1396 Old 12-23-2014, 05:36 AM
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I know but how to they compare in smart TV features and picture quality?
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post #1279 of 1396 Old 12-23-2014, 06:03 AM
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Quote:
Originally Posted by alfred34 View Post
I know but how to they compare in smart TV features and picture quality?
To Be Honest, this question really belongs in this thread:

the "help me choose an LCD" thread

Well, the Smart TV features are easily compared by looking at any retailer's description, or better yet, the LG website:

http://www.lg.com/ca_en/tvs/lg-60LN5...specifications

http://www.lg.com/us/tvs/lg-60LB6100-led-tv

(I dunno why, but the older model only seems to show up on the Canadian LG site...)

I would imagine the newer model is more appealing Smart-TV wise.

I would imagine the picture quality is similar between the two models.

But what do I know, and even moreso, this is all somewhat subjective, so the real question is what do you think?

My opinions are my own, and do not necessarily reflect those of my captors.
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post #1280 of 1396 Old 12-23-2014, 06:33 AM
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The LN5700 was the US model without Magic Remote. The LN5750 may be mainly for Canada with Magic Remote. I think I saw the LN5750 advertised as a warehouse model like Costco once.

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post #1281 of 1396 Old 12-25-2014, 09:27 PM
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I think they improved the "TruMotion" setting in the new update. It seems to be a little smoother and more higher quality. They seemed to have made some changes to improve the picture quality of the TruMotion.
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post #1282 of 1396 Old 12-29-2014, 12:38 PM
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Quote:
Originally Posted by Nightsky View Post
Quote:
Originally Posted by crazyitalian1988 View Post
Has anyone had their TV's back light turn off during a dark scene and then not turn back on. Essentially, the screen goes black and the audio keeps playing. If I shine a light into the screen I can see the Webos menus very dimly. I've had LG replace the screen, power supply and computer. While its intermittent (usually on a very dark scene or a quick fade to black), I was able to replicate it on an LG commercial. I can post a video tomorrow if it's helpful.

I plan on contacting the tech I've been working with tomorrow morning. I'm thinking the options will be a new set or a refund.

Also note that this happens on multiple inputs. I've seen it on my chromecast and on cable.

I had/have this exact issue and sent a video to LG tech support explaining the issue. The tech just said I had to get the tv serviced but I'm skeptical, and also very reluctant to do the servicing since it's such a pain in the behind. The temp solution was to turn the set off and turn it back on again. I found the xbox really triggered this issue.

I do have an update though. A couple weeks ago I went into the menus and played around with a bunch of the settings, and since then, I have yet to have this problem occur. I have no idea which setting did it, or even if it's fixed, but I know I set black level to low, turned off trumotion, and bumped up the default brightness.
After having every component in my set replaced, I'm currently at the retailer getting it swapped out after getting an LG RMA. The issue started to happen very infrequently and got progressively worse. After the replacement process, it happens once every few days during dark scenes.

If the new set doesn't remedy the situation I'm going to file a complaint with American Express. Fingers crossed the problem doesn't continue.
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post #1283 of 1396 Old 12-29-2014, 06:33 PM
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Originally Posted by crazyitalian1988 View Post
After having every component in my set replaced, I'm currently at the retailer getting it swapped out after getting an LG RMA. The issue started to happen very infrequently and got progressively worse. After the replacement process, it happens once every few days during dark scenes.

If the new set doesn't remedy the situation I'm going to file a complaint with American Express. Fingers crossed the problem doesn't continue.
Just a note that I've yet to have this problem reoccur for three weeks now. Uncertain what I did to fix it, but if I had to guess perhaps try upping the brightness setting?
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post #1284 of 1396 Old 12-31-2014, 02:35 PM
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How come when TruMotion is set to "clear" it makes movies that were created in various time periods look like they were recently made, like it turns an old movie and makes it look new? Another thing I notice is that it makes the picture look slightly more zoomed in, like people's heads and backgrounds/environments look slightly bigger or closer up to the screen. It's probably my favorite setting, because the other settings don't make the picture look as good, and I love that I can watch old films without them looking boring and making them seem like they were recently made like a remaster.

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post #1285 of 1396 Old 12-31-2014, 10:37 PM
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because it gives the appearance of a higher frame rate. That's my understanding of it.

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post #1286 of 1396 Old 01-03-2015, 06:04 PM
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Originally Posted by Nightsky View Post
Just a note that I've yet to have this problem reoccur for three weeks now. Uncertain what I did to fix it, but if I had to guess perhaps try upping the brightness setting?
Well I've used the TV quite frequently the past few days without an issue, until tonight. The problem occurred again on the new set today. Will continue to work with LG to get this sorted as it's obviously a flaw with the set.
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post #1287 of 1396 Old 01-04-2015, 07:40 AM
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Well I've used the TV quite frequently the past few days without an issue, until tonight. The problem occurred again on the new set today. Will continue to work with LG to get this sorted as it's obviously a flaw with the set.
Keep us up to date if you would please. I have had this TV since May and mine does this also. Once a day or sometimes when I switch inputs on my receiver to play a blu ray or play the PS4 or PS3.

LG really messed up this year and not sure what my next TV will be!!!! Probably a Samsung
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post #1288 of 1396 Old 01-04-2015, 01:28 PM
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Originally Posted by Devhux View Post
For those with the Global Dimming issue, it looks like the culprit is a setting in the service menu.

While I don't know how to access the service menu directly on my LG 50LB6300, I found an app for my phone called "LG Service Menu Explorer" that uses the IR port on my Note 3 to access it. It's an $8 app, but I figured I'd try it.

In Service Menu 1, I found a Dimming option highlighted in the screenshot. After finding a point in a TV show where I could trigger global dimming easily, I chanced it and turned the dimming option off here. The good news is that it worked! The back light no longer dimmed (or turned off) on a dark/black background. Bad news? The setting doesn't stick once the TV is turned off.

I could probably try making a video to show this. Of course I don't suggest messing with the service menu in case something goes wrong, but perhaps pressure could somehow be put on LG to let this setting be user-adjustable
Could you tell me the product code on sticker on the back of your set? Behind "Product Code: 50 LB6300 - ....this part....." Read on Rtings this 50" is supposed to be a VA type and apparently you can derive the panel manufacturer from that part of the code

Last edited by mithras1; 01-04-2015 at 01:31 PM.
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post #1289 of 1396 Old 01-04-2015, 02:35 PM
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Could you tell me the product code on sticker on the back of your set? Behind "Product Code: 50 LB6300 - ....this part....." Read on Rtings this 50" is supposed to be a VA type and apparently you can derive the panel manufacturer from that part of the code
Is it the SVC code?

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post #1290 of 1396 Old 01-04-2015, 03:04 PM
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Yes, that's it (on european sets it does actually say "product code" instead). It's he 4th letter from the back that indicates the maker and so far it checks out with regards to supposed non-IPS (LG) models.

Here is the list of non-LG panels (if not one of these letters assume you have an LG panel):
  • H - CHI MEI Innolux (IPS)
  • J - CHI MEI Innolux (S-MVA)
  • D - AU OPTRONICS CORP. (A-MVA)
  • T - AU OPTRONICS CORP. (A-MVA)
  • M - SHARP CORPORATION (MVA) or HEESUNG ELECTRONICS LTD.
  • S - SHARP CORPORATION (MVA)
  • G - CHI MEI Innolux. (TN)

So an Innolux for you which iirc Samsung also use for their 50" models ... and Panasonic for their VA sets (like AS600E in Europe, reviewed here http://www.flatpanelshd.com/review.p...&id=1402040248

Quote:
After calibration we measured black depth to 0.03 cd/m2, which is wildly impressive from a TV in this affordable. This is even better than Samsung’s curved high-end LED models that are also based on VA panels. In fact, this is probably the best black level we have seen from an edge LED based LCD TV.

The fact that it beats TVs that are several factors more expensive is noteworthy, but it probably says more about the state of high-end LED models than it says about a mid-range LCD TV such as the AS600.
)

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