MSI GT75 8RG screen upgrade!!!

I need some help from forum experts...

My GT75 8RG start showing this kind of green dots and i dont know what is this ****.

The pannel is a N173HHE-G32 (CMN1747) 120Hz, and i already do some things to discover the problem:

-Already enter in safe mode and green dots still there
-On boot and bios the symbol of msi also show the same defects
-Already used ddu program but still the same
-Used another external monitor and the green dots disappear
-In Paint program, i opened a new project and put black background and i not see any of green dots.
-Checked the port of cable in both sides inside laptop and put again but without any results.

Now is the question, where is the problem? GPU? Display cable? Display? In case that is a display problem how i know that is not only the cable?

I really need your help on this issue.

Thanks.

 

Anyone?

 

Since the green dots disappear on an external monitor, it means your GPU is good, but your laptop LCD screen has failed.

If it is still under warranty, that will be covered. If is isn't still under warranty, you will have to pay to replace the screen...so either contact your vendor, or MSI Support directly for assistance.

 

Well, worth buy a new lcd with more hz or the 120hz are good?
Are you sure that cant be the display cable? How can i discover that? I will install myself the display since not is in warranty anymore.

 

Also i checked a thread that some displays suffer from this issue:

Inverse ghosting display issues with | NVIDIA GeForce Forums

At least N173HHE-G32 is out of that.

 

If it is still under warranty, that will be covered. If is isn't still under warranty, you will have to pay to replace the screen...so either contact your vendor, or MSI Support directly for assistance.

They can help determine whether it could be the cable, or the LCD.

 

Is possible upgrade to a 300hz lcd display?

 

Ask your vendor if it is compatible, and whether they can source it, and the cable if necessary.

 

Ok, if i decide to buy the stock display that is the N173HHE-G32 where is the best place to buy? A trusted vendor.

 

@Falkentyne @Papusan
@Mr. Fox

Any help here about what screen i should put as replacement?

 

Part number of the screen cable:

K1N-3040085-H39

 

I checked in web and there is a Chi Mei N173HCE-G33 (CMN175C), IPS, Full HD, 144 Hz.

The problem is that the 40 pin slot is in the other side of screen, if you look to the display, N173HHE-G32 have the slot in the right...N173HCE-G33 have on the left.

Anyone that made a upgrade on this kind of displays can help me?

 

If the connectors are on opposite sides I doubt that the cable is long enough to reach the connector.

Thing is, If I'm not mixing things..
The left and right you are referring too is when viewing the display from its backside.
The cable on the laptop comes from the right hinge, and when you install the display the connectors is on the left side, the cable goes all the way from the right hing to the left side of the laptop, the new display has the connector on the left, or when installed its now on the right, so all you need to do is make a couple curves with the cable to use up the slack, because the cable and the connector will be in the same side.

 

Frontside i mean and not backside... well I ordered a N173HHE-G32 rev c4 that i think is the last revision just to test if the problem with be really the lcd display. I think that not exist cables with that length on web to test.

 

Take it apart and confirm, but on my GT72 the cable comes from the right hinge, and the display has the connector on the left, so the cable runs from one end of the laptop to the other, if so, your cable can be used with any display be it with left or right connector.

 

N173HHE-G32 FHD 120 hz TN panel



N173HCE-G32 FHD 120 Hz IPS panel



N173HCE-G33 FHD 144Hz IPS panel

 

But thats on the back of the panel, when you rotate it so its front facing the connector will also swap from left to right, or right to left.

 

Sorry bud, you are so right thanks for the clarification

 

Well, today the screen arrived and i'm really happy because i solve the problem...changing the display no more green dots

The old screen was a N173HHE-G32 Rev.C3 and i was able to get the Rev.C4( i think that was the last revision)...anyways i will try a upgrade in future about the frequency.

@senso In my GT75 8RG if you think in the rear side the cable and the connector are in same side on left.

@Donald@zTecpc Thanks for the support

 

I love it when a plan comes together!

 

After some research i got some information about some screens:

N173HHE-G32 120Hz
N173HCE-G33 144Hz
B173HAN05.0 240Hz
B173HAN05.1 300Hz

In a possible upgrade to Auo 5.1 it’s seems that the interface not is the same

One have the connector 20455-040E-12(Chimei) and the other 20682-040E-02(Auo) so how i handle on this?

The good thing on this is that both are eDP 4 lanes with 40 pin.

 

Only way is to buy an extra cable, the connector and solder the connector into a stock cable, making a one off eDP cable, there are no adapters on the market as far as I know.

And a 300Hz display will only be usable on eSports titles at most.

 

The GE75 Raider 10SGS comes with the AUO B173HAN05.1, but i cant find the display cable number

I think that the interface cable in motherboard should be the same as my GT75 8RG.

Edit: This screen support G-Sync.

 

B173HAN05.1 has a different connecting interface with a .4mm pin pitch. Unfortunately, there is no known adaptor that I know of that would make it work.

N173HCE-G33 may work but you'll be downgrading to a 6 bit panel despite it being 144Hz.

Also, because your screen connecting point is on the opposite side of what usually is common will limited your upgrade options unless you do a cable mod. I believe your screen currently is about as good as it could get.

 

Yeah the chimei that i have is very good in response times, one of the best in 120Hz. I will try check if there is any way to do a cable mode since i already saw a slot with a pcb.

Check this,

https://a.aliexpress.com/_mLxIPg5

 

Very interesting.....That is the first adapter I've seen that convert .5mm to .4mm pin pitch. Good find. This will open up a lot more upgrade options.

 

You think that i can do anything with this connector?

@SUADE8880 The cable that i have in msi is the “K1N-3040085-H39”...could you please check the interface of it and if i can mod to B173HAN05.1 in some way?

 

If this adapter works then all you need is an extension cable to route the cable to the other side. Check this out... https://www.aliexpress.com/i/32808329444.html

Of course, being the first one to do this you'll run into some risk whether it is 100% compatible or not via bios/software. Sometimes the risk is rather rewarding..

 

The problem is that my video cable is for N173HHE-G32 that have a I-PEX 20455 conector and the B173HAN05.1 have the I-PEX 20682 conector.

I-PEX 20455




I-PEX 20682

 

Exactly why you need the adapter to work. And it appears that should looking at the description of it.

 

@ SUADE8880 I can use any adaptor from 0.5mm 40 pin 4 lanes to 0.4mm 40 pin 4 lanes? Or i need buy these in the pic?

 

Your best bet is to try the adapter you have posted from aliexpress. I believe the illustration here presents only locking connectors mounted to PCB which is what you don't need.

 

So if i use any adapter that says 40 pin 0.5mm to 40pin 0.4mm will work? I dont need respect the I-Pex slot numbers in last pictures?

 

I have fit multiple different I-Plex plugs into multiple different I-Pex receptacles before without issues as long as the basics matches(Pin count, pitch). You should be fine as long as the adapter works. However, there is no guarantee the screen is a 100% compatible with the laptop without any issues.

 

You have acess to pdfs data sheet of B173HAN05.1 in panelook? I cant find anyhere the pdf with info about the screen...only in panelook.

 

Sorry, I stop subscribing to panelook as they charge an arm and a leg. Hope someone else can provide you the data.

 

Ok thanks, look will be the new Sharp 300Hz screens better than Auo B173HAN05.1?

So this are the items that i buyed:

Auo B173HAN05.1 300Hz FHD
Adaptor 20455 40 Pin 0.5mm pitch to 40 Pin 0.4mm pitch
Extender 20455 40 Pin 0.5mm pitch(both sides)

Lets wait and then i will leave feedback about it

 

Good luck! Keep us updated on the progress and I hope it all works out.

 

I finally got the datasheet file from the website panelook and now have some specs to compare both screens...

Anyone can confirm that this is correct?

Single lane/Single Channel - Max resolution 1600x900
Dual lane/Dual Channel - Max resolution 1920x1080
Quad lane/Quad Channel (4 channel cable) - These will run QHD and UHD resolutions

 

http://forum.notebookreview.com/threads/nh58raq-np6855-screen-upgrade-experience.833976/

1. 30-pin eDP 2-channel (used for FHD without touch)
2. 40-pin eDP 2-channel (used for FHD + touch)
3. 40-pin eDP 4-channel (used for higher display resolutions, touch and non-touch as I understand it)

 

@SUADE8880

The screen and the connectors will come in the next days from China but i was thinking how i will handle with the 40 pin 0.5mm extender...how i will hide that on the laptop?

 

it all sits behind the panel. You will be the only one that knows it is there.

 

@Tech Junky @DaMafiaGamer @Donald@zTecpc @SUADE8880 @senso

The user @Sakuta was able to put the B173HAN05.1 300Hz and other good screens working in a pascal GPU(Quadro p5200) so this give me more hope to continue the upgrade




Credits from Sakuta

 

I hope you get this mod working on your system bro. Best of luck

 

Keep us updated on how it goes. Hope it works out. Good luck!

 

Just for curiosity about AUO panels:


“ Every LCD made by AUO will have the model number starting with “B”. The next 3 numbers refer to the LCD screen size (e.g. B133 means the LCD is 13.3″; B121 is for a 12.1″ LCD, and so on).

New and old AUO models are slightly different. The older models have 2 letters after the screen size, and the newer models have 3. Example of a model number: B156XW01 v.1 (old); B156HTN01.1 (new).

The next letter after the size denotes the screen resolution:

X = 1366×768
R = 1600×900
H = 1920×1080

The next letter after the resolution tells the LCD type – if it is TN or IPS:

T= TN (regular view)
A = IPS (wide view)

The next letter after the type tells if the LCD is made for a touchscreen laptop:

N = no touch screen
T = touchscreen

The digits following after the touchscreen parameter is for the revision of the LCD. They do not have a particular meaning, and they are assigned in a numerical order, as the LCD’s are being produced.

Next is HW number – sometimes important (LCDs may have different brackets alignment, different video connector and/or pins, special EDID, etc).”

Source: https://www.laptopscreen.com

 

Searching in web found another interesting cables/pcb, you can found in ebay/aliexpress/taobao...

 

Source: Jarrod Tech

 

Hello. You poked me via PM, so I'm here.
First of all your issue look like a broken LCD/LCD cable (or even both) - flex cable are mostly cheap so easy to check, also you can buy passive DP/eDP cable to connect LCD panel directly to GPU to test panel with different video output.
Also it would be great if you connect external display to your GPU (even old TV) to exclude any memory artifacts.

Second I'm not so sure about using 240/300hz panels (mostly AUO or Sharp) - they cost plenty, image quality is on par with 144hz hi quality panel, response time is not worth it IMO.
Also you need to be aware that your BIOS got some preloaded brightness curve for few panels and using panel that is included in that small database might introduce some issues with usage (brightness point might be different than it supose to be on that panel).
From my point of view you should stick with high quality 144hz panel - easier to get, cheaper and with good availability.

I've got two recommendations for you :

Innolux CMN175C / 1760 (different revisions - both used in MSI laptops, so you should be able to use overdrive and MSI TrueColor with those),
AUO B173HAN04.0 - same as above, just different panel with similiar quality.
I had CMN175C few times and that panel is quite good 17.3 ich panel, probably one of the best you can buy today.
AUO is on par (had it twice) but it will require some calibration, because whites are shifted towards cold accent.

Buy whatever is cheaper / available - both panels are mounted using double-side tape - no mouting "ears",

Both are G-Sync capable, so if you're using dGPU as your daily driver you should benefit from it.
I do not thing that you'll gain anything from buying B173HAN05.0 or 5.1 (240hz and 300hz panel) - you'll pay almost twice that much as you would pay for good quality 144hz panel.

 

Many thanks for your help bud.

About the chimei N173HCE-G33, this panel only support 262K (6-bit) colors instead of b173HAN05.1 that support 16.7M (8-bit)... i think that the AUO will have better quality.

N173HCE-G33 Specification & Datasheets - Panelook.com

B173HAN05.1 Specification & Datasheets - Panelook.com