Official LG XXLM7600 Owners Thread... - Page 16 - AVS Forum
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LCD Flat Panel Displays > Official LG XXLM7600 Owners Thread...
jeffro23's Avatar jeffro23 06:27 PM 04-22-2012
yeah thats what I was seeing with my first 7600.

The second one was better (or maybe my settings just minimized it )

I do have Local Dimming on Medium and I mentioned earlier theres no visible flashlighting with dimming on high.


Im curious why this is so prevalent. What in the manufacturing/engineering of these sets allows this? wonder why its almost always in the same 2 corners as well...

12none's Avatar 12none 03:47 PM 04-23-2012
New owner here of the LG LM7600. PQ is fantastic, but there is a terrible amount of flashlighting in all 4 corners. Needless to say, it will be sent back. LG I hope you are listening.
tpollagi's Avatar tpollagi 06:09 PM 04-23-2012
Quote:
Originally Posted by jeffro23 View Post

... Im curious why this is so prevalent. What in the manufacturing/engineering of these sets allows this? wonder why its almost always in the same 2 corners as well...

A few years back I followed a Samsung thread (don't remember which one). As I recall, the info was from a Samsung Tech who indicated "flashlights" resulted from slightly mis-torqued screws that hold the LCD panel to the LED-edge-light frame. The panel gets ever so slightly deflected near the hold-down screws and the light diffuser deflects too much light into those areas.

It happens at the corner edges because thats were the screws are and because the corners are easier to deflect than the edge-centers. The fix for many was adjusting how tight those screws are.

To me this makes a lot of sense and explains the random appearance on one set but not another. All the components are fine but the assembly process is just a little off spec.

If anyone has this problem, I'm curious if pushing on the corner of the screen makes it worse / better. There is probably a very simple fix but I have no idea how to access the mounting screws. I'm set up for delivery on the 30'th.
masterkaj's Avatar masterkaj 07:03 PM 04-23-2012
Quote:
Originally Posted by tpollagi View Post

A few years back I followed a Samsung thread (don't remember which one). As I recall, the info was from a Samsung Tech who indicated "flashlights" resulted from slightly mis-torqued screws that hold the LCD panel to the LED-edge-light frame. The panel gets ever so slightly deflected near the hold-down screws and the light diffuser deflects too much light into those areas.

It happens at the corner edges because thats were the screws are and because the corners are easier to deflect than the edge-centers. The fix for many was adjusting how tight those screws are.

To me this makes a lot of sense and explains the random appearance on one set but not another. All the components are fine but the assembly process is just a little off spec.

If anyone has this problem, I'm curious if pushing on the corner of the screen makes it worse / better. There is probably a very simple fix but I have no idea how to access the mounting screws. I'm set up for delivery on the 30'th.

Hmm, makes sense.. I might try it out later. I'm getting a new one delivered tomorrow though. Honestly though, these things need better QC before being sent out.
sheshechic's Avatar sheshechic 07:34 PM 04-23-2012
Does the browser support flash?
12none's Avatar 12none 08:17 PM 04-23-2012
Quote:
Originally Posted by sheshechic View Post

Does the browser support flash?

Yes, because of this I can access sites like cbs.com and watch past episodes posted on their site, but I can not go full screen with the video. I can not access crackle.com though and that is a bit of a bummer.
sheshechic's Avatar sheshechic 09:03 PM 04-23-2012
Thanks.
torres0428's Avatar torres0428 09:50 PM 04-23-2012
Quote:
Originally Posted by tpollagi View Post

A few years back I followed a Samsung thread (don't remember which one). As I recall, the info was from a Samsung Tech who indicated "flashlights" resulted from slightly mis-torqued screws that hold the LCD panel to the LED-edge-light frame. The panel gets ever so slightly deflected near the hold-down screws and the light diffuser deflects too much light into those areas.

It happens at the corner edges because thats were the screws are and because the corners are easier to deflect than the edge-centers. The fix for many was adjusting how tight those screws are.

To me this makes a lot of sense and explains the random appearance on one set but not another. All the components are fine but the assembly process is just a little off spec.

If anyone has this problem, I'm curious if pushing on the corner of the screen makes it worse / better. There is probably a very simple fix but I have no idea how to access the mounting screws. I'm set up for delivery on the 30'th.

I tried that already. Didn't help me at all. I saw the same information couple months ago in 65LW6500 thread. IT worked a little in that TV but not in the 7600. At least nor for me
cow736's Avatar cow736 10:13 PM 04-23-2012
I'm using calibration settings from this link.
http://reviews.lcdtvbuyingguide.com/...-settings.html

At night 41 for backlight seems fine but during the day I've gone as high as 60.
TruMotion I set to "Off" don't like that soap opera effect.

Local dimming I set to "Low" that helps with bottom left & right "flashlight".
masterkaj's Avatar masterkaj 11:03 PM 04-23-2012
Quote:
Originally Posted by cow736 View Post

I'm using calibration settings from this link.
http://reviews.lcdtvbuyingguide.com/...-settings.html

At night 41 for backlight seems fine but during the day I've gone as high as 60.
TruMotion I set to "Off" don't like that soap opera effect.

Local dimming I set to "Low" that helps with bottom left & right "flashlight".

It helps, but as you see from the pictures above, it is still very visible. I just watched some Game of Thrones, and I could totally see it (and that is fullscreen with no black bars).
hornedbronco's Avatar hornedbronco 11:37 PM 04-23-2012
Quote:
Originally Posted by apoklyps3 View Post

hornedbronco please post the pics with the imput lag test and also if possible to test for 4:4:4 test . thanks in advance

Hey apoklyps3: Sorry for the delay, I finally got to upload the pictures for the lag test. Here you go : Lagtest

My previous post as a reference:
Quote:
Originally Posted by hornedbronco View Post

Hi all,

Me and a buddy ran the same lag test as Phantastica on my friend's 47LM7600 and saw similar results :

Test setup:
Macbook -> Displayport to HDMI adapter -> Philips HDMI cable -> 47 LM7600

We used this website for digital clock

Based on Phantastica's experiment, the camera was set to 1/60 shutter and we took pictures and saw the difference in the displayed time on macbook and on the TV

The TV already had the HDMI4 input changed to "PC" and Audio and Video mode to "Game" and we got 0ms lag
so,
1: Label : PC / Picture Mode : Game / Audio Mode : Game = 0ms
2: Label : PC / Picture Mode : Standard / Audio Mode : Game = 33ms
3: Label : PC / Picture Mode : Cinema / Audio Mode : Game = 0ms
4: Label : PC / Picture Mode : Game / Audio Mode : Game = 0ms (Repeat of 1)
5: Label : GAME / Picture Mode : Game / Audio Mode : Game = 33ms
6: Label : AV RECEIVER / Picture Mode : Game / Audio Mode : Game = 34ms
7: Label : PC / Picture Mode : Game / Audio Mode : Game = 0ms (Repeat of 1)

We don't know if this is the absolute best way to measure lag. But, we notice no lag while playing games online ... same with the LM7600 I have. I think LG has come through in a big way fixing lag issues. Since LG marketed dual-play for this years models, I think it forced them to fix the gaming lag issues first

If you want to see the pictures taken during the test, let me know. I can ask my buddy to send them to me.


apoklyps3's Avatar apoklyps3 12:28 AM 04-24-2012
thanks alot man. seems proper test to me. 0 lag, seems great as PC monitor. wondering about 4:4:4 chroma subsampling .can you test for that too? you'd be my hero hehe.
shark140's Avatar shark140 12:30 AM 04-24-2012
Yes......i watch all my porno here.....lol
torres0428's Avatar torres0428 10:22 AM 04-24-2012
I think something is going on with the production of the 7600. Amazon is now from 1-2 months shipping time. I think LG became aware of the issues and has stopped production until they get fixed
Threefiddie's Avatar Threefiddie 01:24 PM 04-24-2012
Quote:
Originally Posted by torres0428 View Post

I think something is going on with the production of the 7600. Amazon is now from 1-2 months shipping time. I think LG became aware of the issues and has stopped production until they get fixed

could be they are selling them... i know around my area they have been doing great. people love that thin bezel. not everyone has those problems or is as critical i would say.

mine has been absolutely great so far 3 weeks i've had it
pokermadness's Avatar pokermadness 05:26 PM 04-24-2012
Quote:
Originally Posted by torres0428 View Post

I think something is going on with the production of the 7600. Amazon is now from 1-2 months shipping time. I think LG became aware of the issues and has stopped production until they get fixed

The 47 is still showing in stock from amazon to me, but at $1500 and not the $1279 I purchased it for on Saturday. I just set up this tv a few minutes ago. I haven't calibrated it yet. I ordered the 47 from amazon and was dreading this flashlighting problem, but I am happy to say I don't have any out of the box. I have only had it on for about 15 minutes on an hd channel though and have not popped a bluray in yet. Can the flashlighting appear later even though I see no signs of any yet? I'll post some updates later.
tpollagi's Avatar tpollagi 05:43 PM 04-24-2012
Quote:
Originally Posted by torres0428 View Post

I think something is going on with the production of the 7600. Amazon is now from 1-2 months shipping time. I think LG became aware of the issues and has stopped production until they get fixed

Amazon regularly puts a shipping delay on something that sells out quickly. Speculating that LG has stopped production because Amazon quickly sold out its first lot is silly. I think LG is just beginning to ramp-up production and get these into sales channels.

It would take a lot more than a handfull of AVS complaints to shut down a production line. It's fun to think that they stay up working late hours to make perfect TV's that satisfy AVS readers. The simple observation that no one from LG's production/engineering/consumer relations/corporate divisions contributes here, speaks volumes.
masterkaj's Avatar masterkaj 07:56 PM 04-24-2012
Well I just got the new one in, unfortunately it is having the same issues. The top right is fine now, but the bottom left is worse. Should I just keep shipping this back or is there another TV I should swap it out for at Best Buy? I was thinking of just upgrading to the 9600, but I haven't seen it listed yet.
torres0428's Avatar torres0428 08:53 PM 04-24-2012
Quote:
Originally Posted by tpollagi View Post

Amazon regularly puts a shipping delay on something that sells out quickly. Speculating that LG has stopped production because Amazon quickly sold out its first lot is silly. I think LG is just beginning to ramp-up production and get these into sales channels.

It would take a lot more than a handfull of AVS complaints to shut down a production line. It's fun to think that they stay up working late hours to make perfect TV's that satisfy AVS readers. The simple observation that no one from LG's production/engineering/consumer relations/corporate divisions contributes here, speaks volumes.

I'm pretty sure it wouldn't be the AVS forums who LG would pay attetion to, rather the amount of returns they are receiving.
tpollagi's Avatar tpollagi 09:34 PM 04-24-2012
Quote:
Originally Posted by masterkaj View Post

Well I just got the new one in, unfortunately it is having the same issues. The top right is fine now, but the bottom left is worse. Should I just keep shipping this back or is there another TV I should swap it out for at Best Buy? I was thinking of just upgrading to the 9600, but I haven't seen it listed yet.

Well, I'll bet the 9600 will be a nice set but its also going to be quite a bit more $$$. Maybe its just me but it seems the high pricing for many of these sets is not reflected in the inconsistent quality, design flaws, firmware problems, and poor customer support.

If my set has issues, I'll just return it. I'm not going to be LG's quality control department. Did that with Samsung and just gave up. Maybe I'll just wait and see what Apple has to offer.
shark140's Avatar shark140 12:50 AM 04-25-2012
Can somebody help me my tv is like lip syncking.....sound and lip is out of sync
mozilla314's Avatar mozilla314 08:36 AM 04-25-2012
Quote:
Originally Posted by shark140 View Post

Can somebody help me my tv is like lip syncking.....sound and lip is out of sync

There should be an AV Sync control in the audio portion of your menu.
There is a lever to move back and forth until the audio matches the
video.
CoryB23's Avatar CoryB23 10:15 AM 04-25-2012
I just got off the phone with Best Buy and will have my replacement 55lm7600 next Friday. Hopefully the flashlighting is no longer a problem with that set.
posterus's Avatar posterus 02:16 PM 04-25-2012
Hey Guys,

I currently have the 47lm76000 on lay-away at Sears for the $1299 price, however, Sears has now dropped the price for the 47lm67000 to $1000. Just wondering if you guys think the 7600 is worth the $300 premium?

Was planning on perhaps getting it this week and would like to know some opinions.

Thanks in advance
tpollagi's Avatar tpollagi 05:19 PM 04-25-2012
As far as I can tell there are 3 differences:

1. Trim package on 6700 is bright metal (silver) while 7600 has dark metal trim (black)
2. 6700 has un-adjustable 120 Hz TrueMotion while 7600 has user adjustable 240 Hz TrueMotion that many people don't like anyway.
3. 6700 is listed with 8M:1 dynamic contrast ratio while 7600 is 9M:1. I haven't seen any side by side comaprisons that indicate the difference is visible or the numbers are meaningful.

The top of the line 9600 is listed as 10M:1. Being a back-lit Local-dimming set, the contrast ratio "should be" very good. That being said, the difference between 8M, 9M, and 10M : 1 "may be" significant.

So, in my opinion, the color is a preference and isn't woth $300, the 240 Hz TrueMotion is probaly going to be turned off and therefore isn't woth $300. What you may be paying for is the higher contrast ratio. This could be a real difference or just marketing nonsense but at this point there isn't enough first hand data to say.

I looked at the 6700 first but when I found the 7600 at a LOWER price I obviously went with the 7600.
shark140's Avatar shark140 12:18 AM 04-26-2012
Quote:
Originally Posted by mozilla314 View Post

There should be an AV Sync control in the audio portion of your menu.
There is a lever to move back and forth until the audio matches the
video.

Thanks mozilla 314 now is working perfectly......
posterus's Avatar posterus 08:16 AM 04-26-2012
Quote:
Originally Posted by tpollagi View Post

As far as I can tell there are 3 differences:

1. Trim package on 6700 is bright metal (silver) while 7600 has dark metal trim (black)
2. 6700 has un-adjustable 120 Hz TrueMotion while 7600 has user adjustable 240 Hz TrueMotion that many people don't like anyway.
3. 6700 is listed with 8M:1 dynamic contrast ratio while 7600 is 9M:1. I haven't seen any side by side comaprisons that indicate the difference is visible or the numbers are meaningful.

The top of the line 9600 is listed as 10M:1. Being a back-lit Local-dimming set, the contrast ratio "should be" very good. That being said, the difference between 8M, 9M, and 10M : 1 "may be" significant.

So, in my opinion, the color is a preference and isn't woth $300, the 240 Hz TrueMotion is probaly going to be turned off and therefore isn't woth $300. What you may be paying for is the higher contrast ratio. This could be a real difference or just marketing nonsense but at this point there isn't enough first hand data to say.

I looked at the 6700 first but when I found the 7600 at a LOWER price I obviously went with the 7600.

Hey man... thanks for the input

I think I am going to stick with the 7600 for now. Reviews on the 6700 model seem so mixed and I do not want to be disappointed haha
masterkaj's Avatar masterkaj 02:28 PM 04-26-2012
I'm tired of swapping out sets, its a pain. I am going to be returning my 55LM7600 for a Panasonic 55GT50. The LM7600 is a great set if you don't mind flash-lighting. However, my latest LM7600 I received had a build date of April 2012 and it still had the issue.

It's too bad too, I wanted to love this TV.
12none's Avatar 12none 02:32 PM 04-26-2012
Quote:
Originally Posted by masterkaj View Post

I'm tired of swapping out sets, its a pain. I am going to be returning my 55LM7600 for a Panasonic 55GT50. The LM7600 is a great set if you don't mind flash-lighting. However, my latest LM7600 I received had a build date of April 2012 and it still had the issue.

It's too bad too, I wanted to love this TV.

Stay away from the Panasonic Plasma's. They have a terrible burn in problem.
weasel00's Avatar weasel00 02:46 PM 04-26-2012
Quote:
Originally Posted by 12none View Post

Stay away from the Panasonic Plasma's. They have a terrible burn in problem.

I had the same problem with a 50 inch st30 model. I could not play any video games for more than 20 minutes without having a permanent reduction of brightness where the HUD was on the screen. This was after the break in time period. The pixel orbiter just made the burn in blurrier (if that is a word). Then there was the problem with green phosphor trails. If you play MW3 the trails were the worst on maps like sea town, where there was a lot of white-ish colors. I returned that set to BB in under 30 days before Christmas.

I ordered a 55lm7600 about a week ago at a locally owned store. I got a good deal with an online price match, but I was told it would be a month before I would get the set. Hopefully the flashlighting isn't too bad.
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