Replacing T430 screen with a better one
Thinkpad T430 laptops (as well as T430s, T420 and T420s) are equipped with awful screens. No matter if the screen is HD (1366x768) or HD+ (1600x900) and no matter if the screen manufacturer is LG, Samsung or AUO: every screen has been reported to show awful viewing angles, poor colors and weak brightness.
The idea of upgrading the screens on these laptops has constantly been discussed, notably on Notebook Review Forum at the thread "X1 display on a T430?" and on ThinkPad-Forum at the thread "T420/T430 auf FHD-Panel umrüsten (wie Alienware 14" FHD matt) ... Gibt's schon Infos?".
While there were many candidates, at this time (November 2013) only the X1 screen has been successfully installed.
The following guide is based on the successful installation of the X1 screen on my T430. Nevertheless, thanks to similarities between T430, T430s, T420 and T420s the information hereby presented could be applied to them as well.
Moreover, I've summarized some information available about one other panel considered as replacement so far. The article itself is written in order to be improved with future discoveries on the subject: any future contribution will be welcome!
Contents
Candidates
The one of X1 Carbon
| FRU | 04X17561 |
|---|---|
| manufact. code | LP140WD2(TL)(E2) |
| approx. cost2 | € 45 + € 40 shipping to EU + € 30 import taxes (laptopscreen.com) |
| suppliers | - Lenovo - laptopscreen.com (USA) |
The HD+ display mounted on X1 Carbon is a 14 inches TN screen made by LG. This screen has been praised by reviewers3: it features good viewing angles, rich colors and high brightness. An interesting comparison between this screen and one of the awful screens mounted on T430 has been published by Laptop Reviews: "Thinkpad X1 Carbon screen comparison to other Thinkpads".
Talking about compatibility, this screen has the right connector (40-pin LVDS) and the right dimensions to fit perfectly in the T430. Besides, it can't be screwed (the original is screwed) and, most important, its connector is on the wrong side (on the right instead of left). In the following solutions for these problems will be presented.
The X1 screen can be purchased straight from Lenovo or from third parts for quite less money.
The one of T440p/T440s
T440p and T440s feature excellent IPS/AHVA panels (1920x1080, Full-HD), that by definition should be superior also to the screen mounted on X1 Carbon. They've been reported to have same dimensions but completely different connectors (eDP instead of LVDS). No consistent solution to this problem seems to have been put forward.
Removing the old screen
Removing the old screen takes just five minutes.
- Disconnected the power cord and battery.
- Remove the bezel by pulling it from the interior edge (the edge that is in direct contact with the screen) using your nails, or a guitar pick.
- Once the bezel has been removed, just unscrew the panel (it is fixed by four Phillips screws), and place it upside down on the keyboard.
- From this position you can now easily disconnect the LCD cable.
Keep the old screen safe. You might be tempted to throw that awful screen against the wall, but if you ever need to send your ThinkPad for warranty repair, you should reinstall the old screen first. That way, there is no trace the ThinkPad was modified.
Swapping the LCD cable (if necessary)
| FRU | 04W6867 or 04W68684 |
|---|---|
| approx. cost2 | € 35 incl. shipping to EU (think_2009) |
| suppliers | - Lenovo - twin-bears on ebay (EU) - think_2009 on Skype (China) - laptoppartstore.weebly.com (USA) |
In order to make a 1600x900 HD+ panel work in the T420/T430, an HD+ LCD cable must be installed.
This isn't a trivial task: you will need to unplug the keyboard and the keyboard bezel assembly. If you're a bit practical with this sort of things, it would take approximately 40 minutes. If this is your first time opening a laptop, maybe you should ask someone to help.
Instructions for replacing the LCD cable can be found on Lenovo website: "LCD panel and LCD cable removal and installation - ThinkPad T430 and T430i".
The HD+ LCD cable works both with HD+ and HD panels.
Extending the LCD cable
The cable connector of X1 Carbon panel is in the wrong position: on the right instead of left. In order to connect the panel to the LCD cable is therefore necessary an extension (sometimes "converter cable" or "extender cable").
One can think about it for one night long, but, by using the standard type of "left to right" extension, there's actually just one possible arrangement that allows not to irreversibly remove parts of the back shell: see the following schema.
In order to fit in this arrangement, the extension cable must be longer than 16.7cm. Beware that the extensions sold to fit in 15.6in displays are usually long just 16cm.
Unfortunately, the most spread model of extension cable with sufficient length has been proved unfit for this application. By this time, the only model that has been proved fit isn't easy to find and requires a difficult modification. Nevertheless, another not widespread model would probably work without requiring difficult modifications. The three models hereby introduced and their installation will be described in the following.
A simple solution that doesn't work
The most common model of extension cable seems perfect for the job: the only necessary modification is a small cut (see picture). Unfortunately, such model has been proved not to work on the long run: the tight bend next to the male connector has the effect of deteriorating the soldering between the connector and the cable itself.
A complicated solution that works
| approx. cost2 | € 3 + € 2 shipping to EU (screenaid) |
|---|---|
| suppliers | - screenaid on ebay (USA) (here the auction) |
A cable extension that can't be affected by the problem of soldering deterioration, is a cable extension where the male connector isn't soldered. Such a cable extension exists, but unfortunately can't be bent near the male connector because it's reinforced with two rigid layers made of plastic (see picture). Nevertheless, these plastic layers can be unglued with about forty minutes of pure fight.
Having considered these difficulties, I would not recommend this solution, although it works fine (I'm using my modified T430 from a couple of month and it's working perfectly).
A simple solution that should work
Searching the internet I found some pictures depicting a cable extension where the vertical segment near the male connector is longer than standard (see picture). Unfortunately I couldn't find where to buy this model, but I'm pretty sure that its form factor, by allowing to fold the cable far from the connector, would enable not to damage the soldering, without requiring important modifications.
Placing the new screen
Although X1 Carbon LCD panel isn't fitted with screw holes, placing it in the T430 body is quite straightforward. This new panel have indeed dimensions perfectly equal to the original and, once in its place, it is vertically sustained by the original vertical supports. The screen can be supported horizontally too by adding shims on its left (I've used folded cardboard), see the picture. Thin shims are necessary on the back of the screen too.
Finally, the screen will be locked in its position by the screen bezel. While re-assembling the bezel, start from the lower side and pay attention to correctly fasten the three hooks present in the center part of this side (it is difficult, but if you don't do it you'll end up with a big hump).
| FOOTNOTES [Δ] |
