Inside the L702x FHD 3D 1080p Display Panel Assembly

great thread scott...
I like your analysis and L702X really have the best display around.

 

Thanks for the kind words and yes, the 120Hz display is very nice.

Scott-

 

Scott,

does the 3D mobo have the touch connector? I am curious about grafting a touch screen from a 900p onto the 3D FHD screen I am getting. I am getting the 702x with 3D and 3GB 555M

For clarity, I am referring to the one in step 11 of section Removing the Display Assembly here:
Documentation

I don't suppose you happen to know of any L701x owner that is getting rid of their touch bits when upgrading to FHD?

Another thing I am curious about - the touch screen assemblies are a little thicker, I would imagine. What kind of difficulties might one encounter in trying to mod or swap out the bezel? From all of your posts I gather that you have a few L701x and L702x of various configs around, so you are in a good position to have a look-see.

 

I have not looked closely lately and none of my systems are disassembled right now (plus I am on the road this week). Rule of thumb, the higher end 3D systems like the one you are getting do have all the available connectors so I would say it is a strong bet your system will have the header. I am pretty sure you will want the touch screen LCD bezel from Dell so you need to look into ordering that since the standard 3D model bezel has less than 0.5mm of wiggle room and you will need up to 2.5mm for things to fit properly. Regardless, I have not explored the touch screen options that much so I cannot offer much more advise.

Scott-

 

Thanks for the info. I have put out some feelers to people on the forums that have mentioned upgrading to FHD and discarding their touch panel, we'll see if anything pans out. I also have a good connection at Dell sales, maybe he can get me a good deal on a 900p assembly.

I will of course report any findings here, and if I dismantle anything I will also post measurements.

 

I have a different computer with the LP173WF2 TP B2 screen.

What does TP B2 mean? Beta 2 vs Alpha 1 or something? It's a 120 hz 3D screen on the HP Envy 17 3D.

I just wanted to know what gamut and brightness it is. I'm guessing it is 400 nits brightness and 72% gamut if there is no difference between TP A1 and TP B2.

 

The model suffix is typically just a batch and/or third party identifier to show when and who the panel was made for. Very rarely does it mean anything beyond that (except for client specific small hardware spec tweaks that have nothing to do with the overall performance). It is very likely that LG gave Dell the client code "A1" and HP "B2" in relation to this specific panel. Regardless, I wouldn't concern myself with it too much.

Here is the complete LP173WF2 preliminary reference data that LG sent out last year before going into production: CLICK HERE

Scott

 

Thanks. Do I even need to mention how dope this screen looks? 120 hz is a must-have for any serious gamer or even movie watcher

theres only 1 knock on this screen and that it comes in glossy only and not matte. the glare in the day time can get annoying. in the night time it looks absolutely brilliant

 

You're welcome. I have matte panels on my business systems and like it as long as the screen is not grainy, but the glossy screen takes the cake if you can control the environment around you to reduce glare/reflecions. The video @ 120Hz is so smooth. I love it!

Scott-

 

Hello and I am so confused on ebay all sellers state that LP173WF2 TP A1 has 50 pin connector and you Scott_RC-TEK tells us that it uses standard 40 pin connector. Can you please shedd more light on this matter. And in your spec sheet that you posted it says that panel comes with two different connectors.

 

I am not sure where I said it was 40pin, but to confirm, the connector on the rear of the panel is a 50pin so it can support the higher bandwidth eDP (embedded display port) interface (120Hz) above and beyond a standard 60Hz LVDS interface. The L702x 3D compatible system board has a single connector as well that supports the different pin configurtion found on the enhanced Dell cable.

I should have probably called the cable/interface an eDP rather than a "LVDS" to not confuse its true capabilities. At any rate, if you are looking for the complete Dell package, I am selling an extra LCD kit I have below.

Scott-

 

Embedded displayport.

This is the first laptop where i have seen this connection. As far as i know there are only 2 other screens that support eDP: 15.6" and 17.3" dreamcolor IPS. In the elitebook and presicion notebooks.

 

But in your second post in this thread you said: Quote/ To confirm, the panel uses a standard 40-pin connector so other display options are possible.

Scott-/Quote

 

Thank you for the heads up. I have corrected that post.

Scott-

 

Huh now all my hopes sink down that ever see 120Hz panel on my asus g73. Is there sny other 120Hz panel that has standard 40 pin connector? Or is that just not possible during the standard limitations?

 

They do make a 3D version of the G73, yes? If so, I would ingvestigate if the same system board is used between the 3D and non-3D systems. If so, you may just need the Asus 120Hz/3D compatible cable, which would allow the use of this panel since it has been used by a few computer manufacturers over the past 18 months.

Scott-

 

Scott! is your display still for sale? and can your display be used by some one with 1080 p non 3d lappy and supported by its board??
IF yes, then i am very much interested in your screen, depending on the price you quote ofcourse

besides, i have PM-ed you, kindly check.

 

Yes, the kit is still available, but I sold the non-3D system before I could test it. The Nvidia GPU's are compatible, but I would need to confirm the system board connector is the same. I will look through pictures I took and see if I can tell. Please forward your PM to me at my email address, scott (at) rc-tek.com, and it will be easier for me to reply to you with your options there.

Scott-

 

Just sent a message to Scott, but perhaps someone else can help me too.
I picked up a L702X with a 3D 120Hz 1080p screen in an auction, so there's no warranty. The LCD screen sometimes flickers and shows white lines, sometimes the whole screen shakes and sort of shivers. This is at 60Hz, it gets much worse at 120Hz. Everything seems to work fine with an external monitor, my Dell U2711 so I am guessing it's a screen issue. I am thinking of buying a new screen and replacing, but can anyone tell me whether this is likely to be a video card issue, a video cable issue or a screen issue. Since an external screen works fine I am guessing it's not a video card problem, is that a reasonable assumption? I am willing to buy a new screen and / or a new cable but I don't want to spend $200+ to find out it's the graphics card. Can you buy these video cables separately anywhere?

 

Do you see the issue when in your system BIOS or just within Windows? Have you run the system diag. by hitting F12 at the Dell splash screen and choosing to run the tests, which will check the video card? It reads like a cable or LCD panel issue. Also, the system is under warranty regardless of where you bought it since Dell tracks it by the serial number, not the current owner. Regardless, you can do a transfer of ownership on the Dell web site so it gets attached to your name.

Scott

 

There is no warranty at all, I checked the service tag on dell support.
I ran system diagnostics, all the display tests run fine, displaying all the patterns is fine except the flickering dots and white lines still occur. Flickering occurs in the bios as well so I guess that rules out a driver issue.

You're right, it's a glossy screen now that I checked carefully, just a lot brighter and less reflective than my old dell 1645.

Not sure if it's the LG LP173WF2 or not, need to open it and check, will do it tomorrow once I get hold of the right screwdrivers. It is definitely 120Hz.

The 3D emitter does not light up and when I try to set up 3D from the nvidia control panel it asks me to connect the USB emitter. I don't have glasses not sure if I need them to activate the emitter or it's just dead. Will check if it's connected when I open it up. There is a 3D logo and emitter under the screen.

Thanks very much for the help.

 

** Update - Corrected Photos **

Below are a few pics of the 3D and non-3D display display cables.

Scott-

 

So I opened up my display..

According to the service manual, the 'USB 3D emitter shunt pigtail header' is just the connector for the touchscreen and obviously the 3D models have no touchscreen.

I definitely do have the right LVDS cable, however the cable is probably the issue.
The 3D infrared emitter doesn't work because the connector is broken, the wires for two of the pins have come off.
There are also some red pen markings on the cable, not sure what it means - that the cable was tested and found defective? (see attached images)

Definitely have the same LG panel (image attached)

I have sent you details about the system via pm. I don't think there is any chance of getting warranty, this must be a factory reject or something. But if you or anyone can help me find a way of getting one of those 3D cables that would be very helpful, I guess it's a Dell custom part?


Edit: Found the cable!
http://www.ebay.com/itm/XPS-L702X-L...0&hash=item4cf9795994&x=67&y=4#ht_2697wt_1163

Ordering on Monday, will post how I go with it. Thanks once again for the help!

 

Yes, you are correct about the touch screen header and pigtail... OOOPS. I will modify the pics.

Wow, that is VERY expensive for a cable, but I guess supply/demand is at play here. I am going to contact Dell again and see if I can get a cable.

I also see your warranty issue. It was distributed in AU so the distributor there needs to handle the warranty, which your system should have since it is only 4 months old. Try to find out where the guy who sold it to you bought it from. There must be a Dell warranty repair depot down under.

Scott

 

This is how the 3D IR emitter connector should look. Pins 4 and 5 are not used.

Scott

 

That is expensive for a cable but on the other hand it seems like the only place in the world I can order one, even if dell parts come around I doubt they will be cheap - I remember how they quoted me $600 to repair a custom CPU fan on a dell desktop that is out of warranty.

The auction house I bought the laptop from explicitly said no warranty of any kind, they aren't going to help me. I will give Dell a call saying this laptop should be under warranty since it just came out, but I don't expect much. By my calculations even if I have to order both the cable AND a new screen, I would still have got the laptop at about 25-30% below it's market price, so it's still not a bad deal.

 

Yup I have the connector, the last two wires (or three I don't exactly remember) have broken off from the white plastic part. Getting a new cable should fix that, but I have a sneaking feeling the screen is the problem with the flickering issue, since it seems to get a bit better after the screen has been on for a while, sort of warmed up, and the cable should either be connected or not, I don't see how it could cause intermittent problems.

 

You can try removing the cable from the system board and reseating it. Thermal expansion from the motherboard could cause intermittent issues in the connection if it is not making good contact with the header pins. Likewise, the same applies on the display panel side.

I have everything you need here, but I would like to sell it as one complete kit.

Scott-

 

So I bought a new screen and the flickering issues are gone. However this screen doesn't do 120Hz. Is it possible that there is an LG model with the same model number that does not do 120Hz or have I been duped by the ebay seller?

 

You have a PM with a few things to check.

Scott

 

Thanks Scott. The hardware id is definitely correct. I have contacted the ebay seller and he seems eager to help out, just waiting for my new cable to arrive so I can test out the screen and send it back if it still doesn't work.

 

Hi, I'm trying to apply the color profiles posted in the wiki and I don't know what I'm doing wrong, but nothing happens. I've followed the directions (about 10 times...):

Right click on each profile and choose Install (now you can delete the files on your desktop)
Go to Control Panel > Color Management
Click the Add button in Devices tab
Choose one of the provided XPS 17 profiles from the list, click OK
Highlight the profile then click Set as Default Profile
Your screen should immediately change to reflect the new color calibration

and my screen stays the same.. I know this happened to another user, but he doesn't seem to have found the answer.

I have the 1080 3D screen, by the way

Is there any other way to apply these profiles?

 

I would disregard the profiles and try this new utility Dell just released which will calibrate the panel automatically and let you make changes from that point. It is designed for use on the Precision M6600, but should work for the L702x too as long as a compatible display panel is detected. I believe the 3D display (LG LP173WF2) is compatible. Try it and let us know.

Scott-

Dell Premier Color Utility

 

thanks!! I'll try that tomorrow and tell you how it goes

 

does any1 know where can i get the wwan antenna for L702X? i wana install a wwan card for my system.

 

I found the solution for my color profiles not working in my display. Here it is in case some one has the same problem:

Solved Color profiles calibration? - Windows 7 Forums

So, Scott, I think I'm not going to try the dell utility, now that I'm all set up

 

Typically, you need to buy the entire rear LCD panel backing to get all the antennas. All I have is a new Studio 1747 rear LCD panel with the antennas and I do not want to harvest them and degrade the value of the panel.

Here is a good starting point: l702x lcd back | eBay

Just ask the seller how many antennas and pigtails are included.

Scott-

 

Hi Scott,

I have an 1702x, I got the same 3d screen, they sent me the wrong video cable (p4j7r) instead of the 552HT, If I buy the cable and the 3d front bezel, is that enough for assembly?

Much appreciated

 

Hi Scott,
I am really sorry if this has already been covered, I have had a good look through your posts but I was wondering if you could give me a more definite confirmation for my typical configuration on the 3D panel upgrade. I have the newer XPS L207X with the Nvidia 555 which is 3D capable, at the moment I have the stock 900p display and im looking to upgrade it to the FHD LG Display because of very poor quality, I had the panel swapped by dell as I was not happy with it due to its very poor backlighting, however the replacement is the same as the old one. So now I am looking to swap it for the higher quality LG 1080p LCD.

Ss I am located in the UK I was planning on buying this screen:

NEW 17.3" LG PHILIPS LP173WF2 FullHD LED SCREEN GLOSSY | eBay

Could you confirm if this is the correct model for my laptop?

I have read what you said about a 50pin cable being required for 3D functionality, If I did not wish to use the 3D functionality of this display would I be able to use the cable that is attached to my 900p display? (presumably the 40-pin one)

I have found a 50pin cable on ebay although quite pricey including p&p

XPS L702X LVDS CABLE 3D 50PIN DDGM7CLC310 (552HT)___NEW | eBay

Thanks for your time!
Jay

 

Hi Jay,
To clarify, the current NON-3D version of the L702x seems to be coming from Dell with a different motherboard that so far I have found is not upgradable to work with the internal 3D/120Hz display panels even if the proper video card, cpu, and cable are used. Therefore, the LP173WF2 is not an option for you at this time.

So, in your case, the only option is to replace the panel with a traditional 1080p panel that runs at 60Hz, which is still great as long as you choose a good panel.

Here are the 1080p panels that are plug and play in your system with your existing cable:

Most desirable glossy panel:
Dell P/N X919N (AU Optronics B173HW01 v.4 – glossy finish)
90% color gamut
600:1 contrast ratio
300+ cd/m2 brightness
70/70 x 60/60 viewing angles (degrees)
Ref: B173HW01 V.4

Very nice anti-glare (matte) display:
Dell P/N H8D3K (AU Optronics B173AUO B173HW01 v.5 – matte finish)
72% color gamut
400:1 contrast ratio
300 cd/m2 brightness
70/70 x 60/60 viewing angles (degrees)
Ref: B173HW01 V5 final functional spec HW-0A

OK, but just average performance:
Dell P/N VCV1F (LG/PHILLIPS LP173WF1 (TL) (B3) – matte finish)
72% color gamut
500:1 contrast ratio (actually 400:1 in test)
200 cd/m2 brightness (somewhat low)
40/40 x 10/30 viewing angles (degrees) (not good)
Ref: http://www.yslcd.com.tw/docs/product/LP173WF1-TLC1.pdf

I hope this helps,
Scott

 

Thats brilliant!, Thanks a lot for that! Its a huge help for me . I think i'll go for the AU Optronics one then; seems to definitely have the best specifications. I'll post some pictures in this thread when I receive it and get it fitted. Thanks again for that!

 

hi Sorry for bumping at that thread but I was looking for an info on how to swoop a standard screen with an IPS one on a dell m6600? Did anyone succeded in doing that? From what I know the IPS won't work with the ati 8900m and you will loose nVidia optimus as the IPS screen can't be supported by integrated intel HD 3000. Is it true that I'll need some additional parts/cables? Will it fit dell m6600 with a touch screen or does it have to be a standard screen cover?-they are different thickness from what i know. I can source an IPS screen for about £200. Thanks in advance for any info

 

Hey guys. Bump!

Could somebody with a 3D L702x try to disconnect the IR Emitter (and if posible try a 60hz lcd) and start the laptop to check if the laptop motherboard doesnt bypass the intel graphics anymore? I'd do it myself but i dont have any screwdrivers at my disposal.

 

Hi screen experts,

I have a l702x with 3D and the monitor is reported by Monitor Asset Manager as a LGD02C5. Viewing angles are pretty poor and I've been wondering about changing it for a 2D panel with wide viewing angles. IPS would be a real bonus but not essential. The question is: which panels could I use and would I have to change the monitor cable for a 40 pin one? It sounds like the AU Optronics B173AUO B173HW01 v.5 is the one to go for as it's a matte coating that I'm after to reduce glare to a minimum. Thanks for any help.

 

Sorry, not possible in this type of notebook. The L702x does not have the needed 10bit video interface (eDP) and the Optimus feature does not support 10bit anyway, which is why this is missing on the M6600/M6700 systems that do have the IPS display installed. Likewise, the LG based IPS panel uses (2) video cables via an interposer card that then interfaces via a single cable to the system board via the dedicated eDP header.

In other words, there is no way to mod the L702x and it would be simpler to just buy a Dell Outlet IPS based M6600/M6700.

 

As mentioned, IPS is not possible on the L702x.

With the standard FHD LVDS cable and a good display like the AUO v.5, you should be fine.

 

Sorry to bump this old thread, but is there any news of the non-3D XPS17 if they're upgradeble with a 120hz screen? I'm not interested with the 3D possibilities only the 120hz option!