Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

T400/410/420 and T500/510/520 series specific matters only
Message
Author
TPFanatic
ThinkPadder
ThinkPadder
Posts: 1231
Joined: Thu Jul 30, 2015 11:29 pm
Location: Boston, Massachusetts

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#61 Post by TPFanatic » Thu Nov 01, 2018 6:56 pm

The screens that are compatible are so because they are specifically programmed to be compatible with the adapter board, which identifies itself as the LCD to the laptop. So I don't think that screen would work.
lenovo X230 i5 3320m IPS 8GB
lenovo T430 i5 3320m FHD 8GB
lenovo T430s i5 3230m QHD 8GB
lenovo T500 P9700 WUXGA 8GB


Enable 2 finger scroll on any Synaptics touchpads with registry: http://forum.thinkpads.com/viewtopic.php?f=2&t=122612

dr_st
Moderator
Moderator
Posts: 7899
Joined: Sat Oct 29, 2005 6:20 am
Location: Israel

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#62 Post by dr_st » Fri Nov 02, 2018 1:09 am

TPFanatic wrote:
Thu Nov 01, 2018 6:56 pm
The screens that are compatible are so because they are specifically programmed to be compatible with the adapter board, which identifies itself as the LCD to the laptop.
So, these screens were used with similar adapters in some commercial laptops as well? Or else why would anyone bother programming them such way?
Thinkpad 25 (20K7), X1 Carbon (20HQ), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad, A21m 2628-GXU

Pokrzept
Sophomore Member
Posts: 188
Joined: Sat Mar 29, 2014 3:45 pm
Location: Lodz, Poland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#63 Post by Pokrzept » Fri Nov 02, 2018 4:03 am

TPFanatic wrote:
Thu Nov 01, 2018 6:56 pm
The screens that are compatible are so because they are specifically programmed to be compatible with the adapter board, which identifies itself as the LCD to the laptop. So I don't think that screen would work.
What do you mean by that? The EDID file in the displays EEPROM has been modified so the adapter board can "communicate" with it properly? If so there's a big chance that B140HAN01.8 will work properly after small EDID update.
P70 / W530 / W700 and 30 more :roll:

tdot
Freshman Member
Posts: 56
Joined: Thu Jun 28, 2018 1:48 am
Location: Toronto, Canada

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#64 Post by tdot » Fri Nov 02, 2018 5:59 am

TPFanatic wrote:
Thu Nov 01, 2018 6:56 pm
The screens that are compatible are so because they are specifically programmed to be compatible with the adapter board, which identifies itself as the LCD to the laptop. So I don't think that screen would work.
I've heard that but that's actually what I don't understand ... and like dr_st I don't quite understand why. (i.e. RMSMajestic asking why don't they support other panels)

Most likely I think I'm missing some understanding of how the eDP protocol works. Is eDP not just a standard interface? Why would the adapter board care what kind of screen it has plugged into it? If the eDP interface is standard, what difference would it make to the converter board? Unless they artificially limited the supported panels, which to me wouldn't make any sense. I'm pretty sure LVDS just sent a video signal not caring what receives it - does eDP require two way communication to output a signal?

If it 'should work' but is 'not supported' I'd consider trying it at least. I'm curious to see a glossy screen, and from what I've read I think the 1.8 is a superior panel (I believe it has a slightly higher contrast ratio and slightly less power consumption) to 1.3 (which spec wise I believe is thinner to 1.2). But if the adapters are locked to certain screens I'll just forget it.

TPFanatic
ThinkPadder
ThinkPadder
Posts: 1231
Joined: Thu Jul 30, 2015 11:29 pm
Location: Boston, Massachusetts

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#65 Post by TPFanatic » Fri Nov 02, 2018 3:43 pm

tdot wrote:
Fri Nov 02, 2018 5:59 am
I've heard that but that's actually what I don't understand ... and like dr_st I don't quite understand why. (i.e. RMSMajestic asking why don't they support other panels)
Ok I spoke backward. I did not mean the LCDs are programmed to work with the adapter board. I mean the adapter board is programmed to work with those specific LCDs. The adapter board has its own firmware that allows it to talk back to certain screens. Javi-Jie put in firmware for each supported screen, and firmware does not exist for other screens, so other screens simply will not work.

The T420, T420s, T430, and T430s do not know how to talk to eDP. eDP and LVDS are different languages. Rather than just making an LVDS to eDP adapter cable, the adapter board is necessary to tell the laptop the specs of the screen. It is the adapter board that tells the laptop "I am a screen." In fact it tells the laptop "I am a B140HAN01.3 with these specs ... " regardless of the fact that my screen is actually a B140HAN01.1, not a 1.3, it tells my computer it is a 1.3. Because it is the adapter board identifying to the laptop that it is a screen, not the screen.

RMSMajesty asks why they don't support other panels, to indicate that the adapter board is a clone of Javi-Jie's prototype, which only supports those specific panels. If the Chinese adapter boards were truly original they would support more panels or be an entirely different design.

You can of course try it but do not be surprised if it does not work. I will be surprised if it does.
lenovo X230 i5 3320m IPS 8GB
lenovo T430 i5 3320m FHD 8GB
lenovo T430s i5 3230m QHD 8GB
lenovo T500 P9700 WUXGA 8GB


Enable 2 finger scroll on any Synaptics touchpads with registry: http://forum.thinkpads.com/viewtopic.php?f=2&t=122612

tdot
Freshman Member
Posts: 56
Joined: Thu Jun 28, 2018 1:48 am
Location: Toronto, Canada

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#66 Post by tdot » Fri Nov 02, 2018 4:04 pm

TPFanatic wrote:
Fri Nov 02, 2018 3:43 pm
tdot wrote:
Fri Nov 02, 2018 5:59 am
I've heard that but that's actually what I don't understand ... and like dr_st I don't quite understand why. (i.e. RMSMajestic asking why don't they support other panels)
The T420, T420s, T430, and T430s do not know how to talk to eDP. eDP and LVDS are different languages. Rather than just making an LVDS to eDP adapter cable, the adapter board is necessary to tell the laptop the specs of the screen. It is the adapter board that tells the laptop "I am a screen." In fact it tells the laptop "I am a B140HAN01.3 with these specs ... " regardless of the fact that my screen is actually a B140HAN01.1, not a 1.3, it tells my computer it is a 1.3. Because it is the adapter board identifying to the laptop that it is a screen, not the screen.
I guess I need to look deeper into the eDP protocol. I understand the above, I just don't understand why it the adapter board cares (or has to care) the difference between a B140HAN or an "anything" that takes eDP as input. I would have assumed the actual display signal signaling between any eDP interface and panel are the same - as I'm pretty sure is the case in LVDS (which IICR is just sync+bit streams per color).

In other words, I understand that the boards are probably programmed to communicate with a specific EDID, but not why it can't just output a 'valid eDP signal' regardless of what its plugged into ... I mean, 99% chance the signalling for B140HAN01.3 and B140HAN01.8 are identical - so the question is, the converter board/eDP can't just 'output a signal for B140HANxxx ignoring the EDID'?

I know it's not really relevant to if it will work or not, just curious :lol:

RMSMajestic
Senior Member
Senior Member
Posts: 700
Joined: Thu Jul 04, 2013 5:31 pm
Location: Washington, D.C. , USA

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#67 Post by RMSMajestic » Tue Nov 06, 2018 8:32 pm

tdot wrote:
Fri Nov 02, 2018 4:04 pm

I guess I need to look deeper into the eDP protocol. I understand the above, I just don't understand why it the adapter board cares (or has to care) the difference between a B140HAN or an "anything" that takes eDP as input. I would have assumed the actual display signal signaling between any eDP interface and panel are the same - as I'm pretty sure is the case in LVDS (which IICR is just sync+bit streams per color).

In other words, I understand that the boards are probably programmed to communicate with a specific EDID, but not why it can't just output a 'valid eDP signal' regardless of what its plugged into ... I mean, 99% chance the signalling for B140HAN01.3 and B140HAN01.8 are identical - so the question is, the converter board/eDP can't just 'output a signal for B140HANxxx ignoring the EDID'?

I know it's not really relevant to if it will work or not, just curious :lol:
The eDP protocol is for transferring data. However EDID is what is used to drive the panel. Just like for harddrive, IDE/SATA/M.2 are just protocols for data transfer but for the HDD to work you will need specific firmware stating the cache size/RPM/reallocation/possible SLC cache etc. Like you can't drive a 4200 rpm HDD to 10k rpm
https://en.wikipedia.org/wiki/Extended_ ... ation_Data

The more ideal kit would be to read the EDID firmware and drive it accordingly. But that is not the ideal solution for the purpose of this converter kit, as it adds more to the cost, space and power consumption or perhaps is beyond what Javi was capable of. So the EDID is embedded in the firmware to make things simple.


Back to B140HAN01.3 & .8, I think they are all based on the same technology, but can't promise anything about that.
Chobits: W701ds i7-940|32G|FX3800m|Digitizer|Calibrator
Big ones: W701 top config T63p QX9300|8G|UXGA T61p dead, please go die as well nVIDIA
Small ones: X61sp P8800X61t SXGA X201 NIB
86 airplane models/ 27 ships/ 21 computers/ 300GB databases/ 0 girlfriend
It's always happier to live in lies and delusions.

goodenough
Posts: 2
Joined: Thu Oct 23, 2014 7:28 pm
Location: SF, USA <unverified>

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#68 Post by goodenough » Sun Dec 02, 2018 11:42 am

CPC464 wrote:
Sat Sep 08, 2018 6:23 am
I used a theoretically original AUO B140HAN01.3.
there are tons of fake panels out there.
Anyone know a legit seller for B140HAN01.3. ?

thelash
Posts: 22
Joined: Sat Aug 06, 2016 11:34 pm
Location: Eltham, New Zealand

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#69 Post by thelash » Fri Dec 07, 2018 9:56 pm

Purchased EvanJoo fhd kit from eqstore for my t420s. Fiddly but successful installation. It's the new kit with the controller sitting under the keyboard. Wondering why the screen cable is so long as it plugs in on the lhs of the screen, same side as on the old 1600x900. (Found a cheap T420s on NZ Trademe with the hd+ screen, thinking I could at least live with it until I did the upgrade - but really? What a piece of junk. Unusable especially with win10 Night light settings. Worst viewing angles of anything TN that I have owned - X220, t400, T61...) Bought a genuine B140HAN01.3 from this guy - https://www.ebay.com/usr/thinking-world3 - got the real deal brand new. Well packed, no bleed, no dead pixels and looks superb.
T460 i5, 16gb ram, 500gb ssd
T430 i5 8gb ram, 500gb ssd, fhd ips.

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#70 Post by Tasurinchi » Sun Dec 09, 2018 4:45 pm

Short report. I bought the non-s version in February this year. I installed the panel using spacers to avoid backlight bleeding.

The kit worked perfectly all this time, but today I booted and plug in the AC adapter to charge the battery my screen started the (in)famous flickering... :(

Anybody else using the kit for long than few months? I'm I the only one getting back this issue after few months use?
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

TPFanatic
ThinkPadder
ThinkPadder
Posts: 1231
Joined: Thu Jul 30, 2015 11:29 pm
Location: Boston, Massachusetts

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#71 Post by TPFanatic » Sun Dec 09, 2018 9:20 pm

I've been using it since August and haven't had that issue.
lenovo X230 i5 3320m IPS 8GB
lenovo T430 i5 3320m FHD 8GB
lenovo T430s i5 3230m QHD 8GB
lenovo T500 P9700 WUXGA 8GB


Enable 2 finger scroll on any Synaptics touchpads with registry: http://forum.thinkpads.com/viewtopic.php?f=2&t=122612

Niknok
Posts: 26
Joined: Mon Mar 21, 2016 4:09 pm
Location: Harrisburg, PA

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#72 Post by Niknok » Mon Dec 10, 2018 12:31 am

I've used my non-S version almost six months with my T420 without any issues, but I did have an LCD screen go bad. I was not using the washers (they were not supplied at that time) and I even left the LCD bezel off to avoid additional screen pressure. Hard to know why the screen went bad and if it was related to mounting the adapter board behind the LCD. I re-positioned the adapter board over the fan like others have; the rest of the cable is *just* long enough to make the connection to the LCD panel. In my opinion, placing the adapter board behind the LCD is not a good idea because there is the possibility of panel flex. Aside from us "early adopters" this is no longer an issue because the non-S kit has been modified with a longer cable to permit mounting the adapter board under the keyboard.

You could recheck that your cable is properly seated in the LCD. I used a piece of duct tape to ensure it stayed seated.

How much memory do you have installed? I believe there was some discussion about the problem occurring with 16gb of dual channel RAM. If you have 16gb you could remove one channel to see if that affects the flickering.

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#73 Post by Tasurinchi » Mon Dec 10, 2018 3:48 am

Niknok wrote:
Mon Dec 10, 2018 12:31 am
In my opinion, placing the adapter board behind the LCD is not a good idea because there is the possibility of panel flex.
Well, I got my own spacers so backlight bleeding is gone and I don't think my panel flexes. I will check the cable but as soon as I disconnect the AC adapter the screen works perfectly, which leads me to believe the cable is properly sitting on all ends.
Niknok wrote:
Mon Dec 10, 2018 12:31 am
How much memory do you have installed? I believe there was some discussion about the problem occurring with 16gb of dual channel RAM. If you have 16gb you could remove one channel to see if that affects the flickering.
Thanks for the hint! I indeed have 16GB so I'll give it a try with 8GB only. Furthermore I have a quad installed... I hope this doesn't additionally stress the adapter... :?
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#74 Post by Tasurinchi » Mon Dec 10, 2018 3:50 am

TPFanatic wrote:
Sun Dec 09, 2018 9:20 pm
I've been using it since August and haven't had that issue.
Still brand new compared to mine :lol:
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

Thinkpad4by3
Senior ThinkPadder
Senior ThinkPadder
Posts: 2562
Joined: Sun Aug 09, 2015 9:25 am
Location: N. Bellmore, ny

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#75 Post by Thinkpad4by3 » Mon Dec 10, 2018 11:45 pm

Tasurinchi wrote:
Mon Dec 10, 2018 3:50 am
TPFanatic wrote:
Sun Dec 09, 2018 9:20 pm
I've been using it since August and haven't had that issue.
Still brand new compared to mine :lol:
And that's brand new compared to mine!

I really want to get one of these but I can't right now :cry: ...and I'd need a donor machine first too.
Thinkpad4by3's Law of the Universe.

The efficiency of two screens equally sized with equal numbers if pixels are equal. The time spent by a 4:3 user complaining about 16:9 is proportional to the inefficiency working with a 16:9 display, therefore the amount of useful work extracted is equal.

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#76 Post by Tasurinchi » Sat Dec 15, 2018 3:08 pm

Well, removed 1 RAM slot and left 1x 8GB RAM... Works like a champ! :thumbs-UP:

A little of a bummer that 16GB will make the adapter flicker... but the screen is gorgeous and for the current usage 8GB will be enough... And Debian is not so RAM hungry :mrgreen:
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

Niknok
Posts: 26
Joined: Mon Mar 21, 2016 4:09 pm
Location: Harrisburg, PA

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#77 Post by Niknok » Sat Dec 15, 2018 11:27 pm

I suppose that's good, at least you have a working configuration. But it's a little disappointing for those of us with 8gb mem who may want to add another 8gb someday.

I wonder if the flickering could be related to power draw, since you had 16gb memory and a quad processor (and the LCD adapter board). You are using at least a 90 watt adapter, right? I believe the adapters go even higher... Perhaps pulling the 8gb mem is just a way of reducing the power draw sufficiently to what works - just a guess on my part.

RealBlackStuff
Admin Emeritus
Admin Emeritus
Posts: 20020
Joined: Mon Sep 18, 2006 5:17 am
Location: Dublin, Ireland
Contact:

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#78 Post by RealBlackStuff » Sun Dec 16, 2018 8:23 am

Try 8+1 or 8+2 or 8+4 GB, maybe you can figure out the flicker "starting point".
And/or try other RAM brand(s).

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#79 Post by Tasurinchi » Sun Dec 16, 2018 9:18 am

RealBlackStuff wrote:
Sun Dec 16, 2018 8:23 am
Try 8+1 or 8+2 or 8+4 GB, maybe you can figure out the flicker "starting point".
And/or try other RAM brand(s).
Excellent idea... Going back to the table... ;-)
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#80 Post by Tasurinchi » Sun Dec 16, 2018 4:13 pm

Ok, this is bad... :(

It was not flickering with 1x 8GB because the battery was quite full, I depleted it and after that it will flicker with any RAM combo I tried

1x 8GB (Micron) + 1x 4GB (Elpida) - Both 12800
1x 8GB (Micron) + 1x 2GB (Hynix) - Both 12800
1x 8GB (Kingston Hyper-X 12800) + 1x 2GB (Micron 10600)
1x 8GB (Kingston Hyper-X 12800)
1x 8GB (Hynix, 12800)

The above were a combination of 1xR8 and 2xR8 chips...

So I guess is back to 1600x900... :roll: Hopefully the other mod kits don't start flicker in the near future...
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

Niknok
Posts: 26
Joined: Mon Mar 21, 2016 4:09 pm
Location: Harrisburg, PA

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#81 Post by Niknok » Sun Dec 16, 2018 5:42 pm

But how often do you use the laptop with a depleted battery in your day to day use? - before going back to the 1600x900 panel, recharge your battery and use it and see at what point the battery drops before the flickering happens. For example, maybe the screen only flickers when the battery is 90% depleted - but until you hit that point it may work fine perhaps.

What size AC adapter are you using?

When your system was fully loaded (16gb, FHD, quad) you had flickering. When one component (8gb) was removed and you "lightened the load", the flickering stopped. When the battery was depleted, the flickering returned. Seems like the flickering happens when the available power is low, or something like that.

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#82 Post by Tasurinchi » Mon Dec 17, 2018 3:48 am

Niknok wrote:
Sun Dec 16, 2018 5:42 pm
Seems like the flickering happens when the available power is low, or something like that.
Well, I'm not totally surprised it flickers. I don't know if you're aware of the history of these adapters, I previously had Ja-Vie's adapter in this very same T430 (distributed here in the forum by RMSMAjestic) which had the flickering issue.

Then we got this alternative adapter, RMSMAjestic said that according to Ja-Vie's opinion this would only reduce the risk of flickering, but not totally resolve it, which I can unfortunately confirm.

Back to your question, I'm using the 90W adapter and I think as soon as the battery start charging the flickering appears. I'll check again to be sure...

Anyway I probably put back the original panel and conclude this experiment. I have few other ThinkPads with FHD mods (T420s/T430s), 3K mod (T430s) or native FHD panels so I don't really need to hang on this one.
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

Niknok
Posts: 26
Joined: Mon Mar 21, 2016 4:09 pm
Location: Harrisburg, PA

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#83 Post by Niknok » Mon Dec 17, 2018 1:32 pm

Didn't someone make some kind of script to modify how the battery charges to reduce flickering?

dthp
Posts: 2
Joined: Thu Dec 20, 2018 1:02 am
Location: Glasgow, UK

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#84 Post by dthp » Thu Dec 20, 2018 1:06 am

Does anyone here have a T430 with an upgraded CPU and this screen controller + FHD IPS screen that has no flickering issues?

fatal_exception
Posts: 10
Joined: Thu Dec 20, 2018 11:55 am
Location: Katowice, Poland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#85 Post by fatal_exception » Thu Dec 20, 2018 12:19 pm

Hi guys,

I'll throw in my 2 cents, as I have recently bought an AHVA-type panel along with the converter kit.
It will flicker when the battery is charged. From my experience the amount of RAM or anything else doesn't matter (as to why would different CPU cause flicker... I really wonder)

I've made a simple test - had my battery charged to 80% (in Lenovo Power Controls app I've set it so it would charge the battery to 80% when it drops to 60%), changed the parameters to 90/80 and immediately as my battery started charging, flickering kicked in.
Did that using few more settings. Same thing happened, copy-paste. Disconnected the battery during the charging, flickering stopped.

From my point of view, the only thing related to flickering is battery charging. I don't know if it's a matter of display cables going too close to the charging port cables or it's a bit more complicated matter. I'd say it's the latter, as the DC shouldn't have any effect, but it could be that the current is poorly filtered and it impacts the lvds line, however I don't have an oscilloscope to verify that. If somebody has done some research, please let me know where I can find it, I'm just curious why does it happen, especially that the converter board is moved behind the LCD screen.

Anyway, as my T430 is plugged 99,99% of the time to the AC, it doesn't bother me that much, however if I could fix that issue, I'd probably do it, because well... why not?

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#86 Post by Tasurinchi » Thu Dec 20, 2018 12:34 pm

Welcome to the forum!

Thanks a lot for your feedback, funnily enough a very similar type of mod chip is used for the "s" models, yet none of them flicker (at least until now :wink:)

There is a new version of this mod with a longer cable, so that you can place it under the keyboard. But I don't think this will solve the flicker issue either, since the original Ja-Vie's adapter was also placed there and had the flicker issue.

What surprises me is that my chip worked fine for few months... Weird thing...
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

TPFanatic
ThinkPadder
ThinkPadder
Posts: 1231
Joined: Thu Jul 30, 2015 11:29 pm
Location: Boston, Massachusetts

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#87 Post by TPFanatic » Thu Dec 20, 2018 12:34 pm

I believe the primary appeal behind the new converter kit is that they do not flicker, as opposed to the earlier versions.
lenovo X230 i5 3320m IPS 8GB
lenovo T430 i5 3320m FHD 8GB
lenovo T430s i5 3230m QHD 8GB
lenovo T500 P9700 WUXGA 8GB


Enable 2 finger scroll on any Synaptics touchpads with registry: http://forum.thinkpads.com/viewtopic.php?f=2&t=122612

fatal_exception
Posts: 10
Joined: Thu Dec 20, 2018 11:55 am
Location: Katowice, Poland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#88 Post by fatal_exception » Thu Dec 20, 2018 2:38 pm

Tasurinchi wrote:
Thu Dec 20, 2018 12:34 pm
(...) funnily enough a very similar type of mod chip is used for the "s" models, yet none of them flicker (at least until now :wink:)
I do know about that but since "s" is (should be) just an revamped version of any ThinkPad, is that really so difficult to compare the motherboards and maybe come up with a solution just by looking at the differences?
I don't want to be seen as the know-it-all, neither I want to imply that the person who invented the thing doesn't know what he's doing, but either it's something as simple as power spikes or poor filtering (missing, too small capacitor?) when the charging takes place or the whole display-related part of the MB was drastically changed (deliberately or by the way) and since other parts are used, the issue doesn't surface.

Tasurinchi
Moderator
Moderator
Posts: 2116
Joined: Mon Aug 17, 2009 8:38 am
Location: Zurich, Switzerland

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#89 Post by Tasurinchi » Thu Dec 20, 2018 3:52 pm

TPFanatic wrote:
Thu Dec 20, 2018 12:34 pm
I believe the primary appeal behind the new converter kit is that they do not flicker, as opposed to the earlier versions.
I was of the opinion that only the cable was new (always speaking of the EvanJoo model, not Ja-Vie's one)
IBM Convertible 5140/L40SX/220/240/240X/2*340CSE/360PE/365XD/380D/380E/380XD/380Z/390/560E/560X/2*570/2*600/600E/750Cs/755C/760CD/760EL/760XD/770E
A20p/A22p/A31/i1600/G40/R50p/R61i/S30/SL510/2*T22/4*T4x/11*T6x/6*T40x/6*T5x0/3*W5x0/W700/3*X2x/4*X3x/3*X4x/5*X6x/3*X6xT/12*X2xx/4*X30x/Z60m/3*Z61x

Niknok
Posts: 26
Joined: Mon Mar 21, 2016 4:09 pm
Location: Harrisburg, PA

Re: New IPS FHD Upgrade Kit for thinkpad T420 T430 ,And T430S T420S

#90 Post by Niknok » Thu Dec 20, 2018 5:53 pm

Old version or new version, discussion about flickering has been in the forums. It is not mentioned in the Ebay listing.

Something has changed with the newer version. From eqstore: I am sorry that the older version of this kit , we do not have longer cable for it. And the new version cable is not compatible for it . Perhaps they changed the pin mapping from the cable to the board, or it could be more extensive. I don't believe any additional claims were made about the new version except the new cable permitted mounting the board under the keyboard.

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “ThinkPad T400/410/420 and T500/510/520 Series”

Who is online

Users browsing this forum: No registered users and 28 guests