Official LG XXLM4600/XXLM4700 Owners Thread

I picked up one of these displays on the cheap over the holiday and was curious about what everyone else is finding on these TVs.

First, the LM4600 and LM4700 are the same display, the 4700 line includes the soundbar. Since this is a display forum I decided these two lines should be consolidated since they are both the same display units.

I had a horrible time getting one delivered. The first one came with a display defect which I discussed here. It took 3 more attempts before getting one that wasn't destroyed in shipping. I wish there was another option that didn't involve shipping.

I had been looking at the 6700 and 4600 models before deciding I couldn't stand the silver frame. One other interesting thing I noticed about the two models is that the 4600 has more inputs than the 6700. I could live without the "smart" TV and 240Hz refresh so the 4600 looked like a good entry 3D display for the family room.

The glare on the screen is pretty strong, and something to pay attention to if you're thinking about one of these sets. This is as bad as some of the samsung plasmas which I always thought had the worst glare.

The firmware which comes on the TV is lacking a few of the features and includes some support for things NOT included in this set. Some of the lacking features are the TruMotion. I'm not sure if it's enabled or disabled, there are no menu items to indicate anything about TruMotion. LG says they are aware of this, and there will be support in a future firmware relase.

Another interesting twist on the set has to do with 3D. Before 3D is active you're allow to bring up a 3D menu which is very cryptic and not easy to understand. There are 4 choices 2D->3D, top-bottom, side-by-side, and sequental frame modes. It doesn't appear to matter which you select, the set will do what it wants. It often defaults to the sequental frame, which is active 3D and this set only supports passive 3D. (A firmware update will dim out the sequental option, but it's still displayed). Getting the 3D to work well can be difficult. I have had the most difficult time with Disney 3D movies. The "cross talk" appears unless I can get my Sony player and TV to work correctly. I've also tried a LG 3D Blu player just to make sure it's the TV and not the blu player, the results were similar, but the LG blu did integrate with the TV a bit better. Another 3D option promised in the marketing material is "3d-depth" adjustment, this feature is not currently supported. The 3d-viewing angle is supported, but only seems to shift the ghosted image from left to righ, never eliminating it.

I haven't done a full calibration on it yet, I have done the built-in easy (or perfect) picture which I was quite impressed with. It was pretty easy to follow and did a good job getting the display configured. I'll be doing a full calibration when I get a chance.

I did look at some of the "service menu" stuff. The access code is 0413 if you choose to check these out. This includes test images to check for bad pixels which I found most sets have at least one, but I didn't have any which were noticable at normal viewing distance.

A note on the 3D glasses, they aren't the "good ones" show in the marketing material. These are flimsy glasses which are easy to bend and flex. I picked up a set of the solid passive glasses which I like better.


Some other random findings:
I did open up one of these to check out the interior and it's pretty simple.There is a large power supply board, an I/O board and one other board which I'm not clear of it's function yet. The I/O board has a spot for a second USB jack, I didn't bother to solder one on and see if it works, but I wouldn't be surprised if there's a second USB port on the back (of course you can likely just hook up a hub for the same functionality).


One other note about using a USB drive, it seems that you should "unmount" the drive when done before powering down. There appear to be some reports of damaging the drives if the drive isn't unmounted. This can easily be done with the quick menu, select the USB drive and unmount it.
Edited by Jeff D - 12/31/12 at 12:31pm

Support Pages:
LM4600
LM4700


User Manuals:
LM4600
LM4700

User Guide:
LM4600

Firmware:
(If anyone has a previous version of the firmware please let me know, I'd like to get a copy of the eariler versions to track what they're changing)
Version 03.40.08 - To enhance 3D performance
Edited by Jeff D - 12/31/12 at 12:32pm

Hi Kevin, I was thinking about including your 5800 series in the list, but for some reason decided not to. I was looking around at global firmware releases and discovered there's another LM5800 in japan which isn't the same as yours. The japanese LM5800 is a smart TV.

I don't think LG spent a lot of time getting the 3D features well supported. I didn't notice the backlight issue, but I'm not surprised to know that's how it works. The cross talk is something that's pretty slight,but I've seen it a lot. I'm still running the older firmware (03.03.36) I did see others here discussing that firmware release and hoping someone can get me a copy. I'll likely update the firmware and see if that fixes the problem I've been having with the crosstalk.

I had seen comments about the poor quality of the internal speakers. I won't say I don't agreee, but I discovered they can sound "OK". There's a in the support (red) buttone in the settings menu which has some test sequences for picture and audio. I was surprised that the audio test sounds way better than I expected. I'll have to investigate what they're doing there. I'll try to hack around with that and see if I can figure what they're doing.

I do really like one freature of the "energy savings". My wife like some of the audio streaming features of the smart blurays and directv. My receiver isn't 3D compatible, so I'm need to run my 3D sources (blu/directv) to the TV and use the optical out to supply audio to the receiver. The "screen off" feature is great for keeping the audio (music) streaming while the display is off.

Actually, it's illegal for them to market a feature if they don't/won't support it. This falls under the implied warranty under the uniform commercial code(UCC) which is law in most states. This includes a warranty of merchantability and fitness. These state the the item purchased should function as expected under normal use. Fitness puts the responsibility on the merchant that the item meets the requirements stated to the consumer as part of their decision on purchasing the merchandise. It's the merchants responsibilty, not the consumer, to be sure the product does what it's stated to do. There can be a question to if the retailer or manufacturer is the merchant, but I've seen the courts put the responsibility on the manufacturer when the product doesn't support the listed product features. I thought the reason for this was that the retailers are just acting as agents for the manufacturers and can't be expected to validate every product the retailer sells does what it's suppose to.

dperkins, I found the view point change shows with the cross-talk and you can move the shifted image from the left to the right and back. It was interesting to play with, but I haven't found an good use for it yet. I really want the depth enabled. I did see the depth enabled when I was streaming some AVHC files, but that was 2-D without 3D enabled so I wasn't sure why it was enabled. I didn't investigate it further.

I'm currently trying to figure out what the "hockey issue" is with these TVs. I saw it mentioned in another thread and with the IIHF tourney going on now I can actually watch some hockey. I've seen a few things, but by far the most annoying is the officials flashing with movement. I've also seen some edge enhancement type glow around black text on the white boards. Another thing I've noticed with very limited viewing is what I'd say is similar to a reverse pull-down pattern where an image seems to jump forward/backward moving forward in time.

mvadu, did you update the firmware of the TV? The firmware that was found on most of the TVs sold over the Christmas season have firmware with really bad 3D performance. The latest version (listed above) does a better job. That said... I've found the TV (with old fw) operated in several modes... horrible cross-talk, moderate cross-talk, and no cross-talk. I didn't find a reason for this, but there were three different states the TV/Blu player would operate in. When the cross-talk problem happens any slight movement of my head causes a large shift on the screen. The adjusment you mentioned affects that. When it's working properly there's a slight shift when I move my head slightly. Really different performance depending on how it's functioning.

That split screen 2 player mode is listed on the model specs, but I'm not sure it has been implimented yet. I haven't seen those glasses, but I haven't looked too hard.

Strike that, it looks like they've changed the product description.

Did you read the paper docs, or the embedded docs? I don't remember exact specifics, but documentation stored on the TV are better than the paper docs which I believe focus on setup.