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Trying to upgrade Toshiba NB550D screen from WSVGA to WXGA

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February 28, 2013 12:13:47 PM

Hi,

I'm trying to upgrade the screen of my Toshiba NB550D to work with windows 8 and because the higher resolution works well with this netbook. I bought an equivalent LG 10.1 LED WXGA screen but there is noise in some areas of the some colours, I'm trying to work out if the screen is faulty or it's incompatible?

I know some people have successfully upgrade the NB500 series screens but I'm not sure about not this particular model. Other than the colour glitch the screen works really well and is crisp and smooth.

I don't want to have to go back to WSVGA, why did Toshiba not use a 1366x768 screen with this netbook?
The graphics card can handle HD so it should be ok yes?

The colour noise is in the Bios screen so it can't be a video driver issue I assume....

Thanks for any help
a b D Laptop
February 28, 2013 12:40:37 PM

Does it boot up? If so, how does it handle the OS operations?
February 28, 2013 1:15:26 PM

Hi,

Yes it boots up and Windows 8 works really well except it has fuzzy noise and lines in certain colours, not all though.
Windows itself detects no problem with the screen.

here are some closeups:





Related resources
February 28, 2013 1:25:46 PM

Here's another:

a b D Laptop
February 28, 2013 2:00:28 PM

Looks like the display is not capable of rendering certain tones correctly. Could it be a faulty one? If so, can you return it for a replacement?
February 28, 2013 2:25:25 PM

I'm hoping that it's because it's a faulty screen. The supplier is letting me return it. But I will get another one from somewhere else.
I'm just wondering if an WXGA screen is incompatible with this netbook would it have errors like this?
a b D Laptop
February 28, 2013 2:36:01 PM

The difference in resolution should not give any errors, or should give errors regardless of the color tone. AFAIK. Others feel free to chime in.
February 28, 2013 3:41:00 PM

Thanks, hopefully someone else can also confirm that these colour errors are the result of a faulty screen and not because it's incompatible.

I don't really want to get another one ordered if it won't work because of something to do with the netbook :) 
a c 248 D Laptop
February 28, 2013 4:59:51 PM

Hi :) 

You CANNOT just upgrade the screen like that lol

Your screen has a white sticker on the back with the part number on, it MUST be the same part number for OLD AND NEW SCREENS...

All the best Brett :) 
February 28, 2013 5:22:34 PM

Quote:
You CANNOT just upgrade the screen like that


Hi Brett, can you say why without a flat statement?

I know on most netbook models you can't. According to this thread you can on my series of netbook http://forum.notebookreview.com/hardware-components-aft...

So it has been done on this series of netbooks. I don't know how the hardware works, if it has a graphics card that supports it and a monitor connection which is compatible is there something else hard wired to the motherboard which prevents it?

So if it doesn't work what exactly is causing the color band issues? I'm searching for a definite hardware reason other than you simply "cannot" do it as others have.

thanks
a c 248 D Laptop
February 28, 2013 5:26:33 PM

Hi :) 

Look at my sig...that's why...

99% of lappies NEED the correct screen...easy way to test yours ...put in the CORRECT NEW SCREEN (numbers same) and if it works perfectly, you will know i am right...

All the best Brett :) 
a b D Laptop
February 28, 2013 5:42:04 PM

The rare time it does work is usually when they either use the same hardware for multiple laptops or they offered the laptop itself with different resolution screens. IE, a model that lets you get a 15" 1600x or 1920x screen at checkout, the 1920x screen would probably work because the company isn't changing anything other than a different panel. In reality though, most laptops don't do that.

Yes it worked for 1 person who said so on a forum. The majority of laptops though, it won't. It's hard to say if it's a panel issue or incompatible with your laptop.
March 4, 2013 1:06:20 PM

Brett928S2 said:
Hi :) 

Look at my sig...that's why...

99% of lappies NEED the correct screen...easy way to test yours ...put in the CORRECT NEW SCREEN (numbers same) and if it works perfectly, you will know i am right...

All the best Brett :) 


Hi Brett,

Of course I am aware of this :)  I wouldn't have tried to upgrade the screen without the knowledge that several other people have successfully done so with this model.

It turns out that the screen connector is damaged and this might be causing the issue. I was careful, but not careful enough obviously as when I peeled the tape back it bent some of the connector slightly.

The original screen is no longer working by my connector. How easy is it to replace a screen connector?
I can still connect to an external monitor via hdmi on the netbook So I know this connector is the problem.


thanks
March 4, 2013 1:47:25 PM

Well it turns out it's not particularly easy but not too difficult on most laptops so hopefully this one is the same. I've found the lcd cable part online. That seems the only option at this point unless I can somehow fix the connector.
a b D Laptop
March 4, 2013 2:21:14 PM

Is it a flat ribbon connector? Once they get damaged, get a new one. Too hard to try and fix or solder.
March 5, 2013 9:38:49 AM

getochkn said:
Is it a flat ribbon connector? Once they get damaged, get a new one. Too hard to try and fix or solder.


I'm not sure if that's what it's called but it's very flimsy so I'm just ordering another instead of even trying, they're quite inexpensive anyway....
March 6, 2013 9:28:55 AM

Just thought I'd chime in here:

The mod works for sure on an NB500 and according to EMPR (tosh.empr.com.au) the part numbers for the NB500 LCD Panels are identical to the part numbers for the NB550D LCD Panels. Any screen mod that works with the NB500 will also definitely work with an NB550D.
March 6, 2013 9:40:48 AM

Wrathlon69 said:
Just thought I'd chime in here:

The mod works for sure on an NB500 and according to EMPR (tosh.empr.com.au) the part numbers for the NB500 LCD Panels are identical to the part numbers for the NB550D LCD Panels. Any screen mod that works with the NB500 will also definitely work with an NB550D.


Thanks :)  that's good to know, I must have damaged the connector when I peeled the tape back which caused the slight colour error, otherwise it was working great.
March 8, 2013 8:37:45 AM

This has inspired me so I just bought myself a 1366x768 panel and decided to take it a step further with a capacitive touchscreen overlay :D 
March 11, 2013 7:58:28 PM

OK mine arrived, I have the similar screen crap going on but its on everything.

When I plug the original screen in, it works fine.

Considering the guy in that thread did it with a laptop that shares the exact same panels Id really love to know why its having issues.
March 12, 2013 2:27:14 AM

Wrathlon69 said:
OK mine arrived, I have the similar screen crap going on but its on everything.

When I plug the original screen in, it works fine.

Considering the guy in that thread did it with a laptop that shares the exact same panels Id really love to know why its having issues.


I'm still waiting for my LCD cable to arrive. Did you double check that the screen was attached properly?
Is it an LG screen like the original?
This is a setback as we can't confirm if anyone has managed to upgrade this model yet.
March 12, 2013 3:00:05 AM

carnbot said:
Wrathlon69 said:
OK mine arrived, I have the similar screen crap going on but its on everything.

When I plug the original screen in, it works fine.

Considering the guy in that thread did it with a laptop that shares the exact same panels Id really love to know why its having issues.


I'm still waiting for my LCD cable to arrive. Did you double check that the screen was attached properly?
Is it an LG screen like the original?
This is a setback as we can't confirm if anyone has managed to upgrade this model yet.


I double, triple and quadruple checked. I'm confident I know exactly what the problem is:

In the older NB500 series it has a low level hardware control to initialise the screen properly at 1366x768 whereas our model doesnt. All is not lost however, as this means its purely a signal output problem.

Evidence pointing to this:

1) I found a thread of a guy who was replacing the LP101WSA screen (Our factory panel) with a LP101WH1 (The panel we are trying to use) in a different laptop. One person solved it by extracting the graphics module from the BIOS of a different laptop and imported it into the BIOS for his laptop and got it going as it now contained the profile needed to run that panel correctly.

2) In another thread, a guy doing the same thing managed to resolve the problem by compiling a new intel graphics driver with custom signal settings to override the defaults. This made the panel work perfectly in Windows but didnt resolve the issues outside of windows obviously as its a driver fix. This doesnt matter as the signal, although bad, is more than adequate for BIOS and setup, etc.

The first finding points to it being a BIOS limitation, the second points to that limitation being able to be compensated for in the graphics driver.

I actually have some experience in this - my desktop runs a Radeon 5970 and I use an old FW900 24" Widescreen CRT. The problem is ATi drivers cant custom res simply like nVidia ones can and the monitor supports well beyond its official resolutions. I made a custom monitor INF that overrides the EDID detection and tells the graphic card specifically what signal to output and it works. I have a monitor that officially supports 2304x1440@60hz outputting 2560x1600@72hz.

I tried the same trick on the netbook with the new panel and it seems the 6250/6290 accepts this override just fine as I went from bad signal to no signal at all but still had backlight control indicating the panel was just out of range. When I plugged the default panel it, it tried to draw 1366x768 but cut it off because the panel isnt that big and it had a green artifact at the bottom meaning that it did, in fact, modify the graphics card output.

I have documentation of both panels with their signalling info and they are VERY different panels, hence why it doesnt work properly. Given what I've found, what others have solved with and from my limited testing so far, I should be able to make a custom driver to enable the panel to work correctly just need a bit of time to play around and experiment.

Dont lose hope just yet because I'm about 90% confident I can fix this.
March 12, 2013 4:10:03 AM

That's great, good luck with the custom driver and testing, fingers crossed....:) 
March 12, 2013 8:13:04 AM

Well bad news unfortunately. Ive tested every single combination of everything in both Windows and in Linux with custom outputs etc and its always the same.

There must just be some slight difference between the LVDS controller on these boards and the one on the older NB500 that lets the older one use the panels.
a c 248 D Laptop
March 12, 2013 1:13:29 PM

Wrathlon69 said:
Well bad news unfortunately. Ive tested every single combination of everything in both Windows and in Linux with custom outputs etc and its always the same.

There must just be some slight difference between the LVDS controller on these boards and the one on the older NB500 that lets the older one use the panels.


Hi :) 

Sorry but I did tell you...we change hundreds of screens a month....

All the best Brett :) 
March 12, 2013 2:27:48 PM

Wrathlon69 said:
Well bad news unfortunately. Ive tested every single combination of everything in both Windows and in Linux with custom outputs etc and its always the same.

There must just be some slight difference between the LVDS controller on these boards and the one on the older NB500 that lets the older one use the panels.


That's a shame, something to do with the fact that NB500 is intel Atom and NB550D is AMD C-50 maybe?
It's annoying that this graphics card, good though it is for a netbook can't scale easily. Maybe someone else will find a workaround sometime....
I'm still tempted to fit a WXGA screen as it was usable on mine for browsing reading and writing, only annoying if watching a film really and I don't do that on my netbook. When someone releases a thin usb powered hdmi touchscreen then we have another option.
March 13, 2013 2:39:12 AM

carnbot said:
Wrathlon69 said:
Well bad news unfortunately. Ive tested every single combination of everything in both Windows and in Linux with custom outputs etc and its always the same.

There must just be some slight difference between the LVDS controller on these boards and the one on the older NB500 that lets the older one use the panels.


That's a shame, something to do with the fact that NB500 is intel Atom and NB550D is AMD C-50 maybe?
It's annoying that this graphics card, good though it is for a netbook can't scale easily. Maybe someone else will find a workaround sometime....
I'm still tempted to fit a WXGA screen as it was usable on mine for browsing reading and writing, only annoying if watching a film really and I don't do that on my netbook. When someone releases a thin usb powered hdmi touchscreen then we have another option.


There is always the possibility of a bad batch or a bad panel here. I guess try a new cable and see. Ive been reading up on lvds non stop and I really cant see a reason for this not working.
March 13, 2013 3:29:28 AM

I think its something specific with the panel we are using - whats the model number on yours?

The reason being is I found a 15.6" laptop here thats LED 1366x768 and 40 pin LVDS cable and plugged it in to my NB550D and it works perfectly so its NOT a problem with 1366x768 specifically so much as its a problem with this laptop and that specific board.
March 13, 2013 4:19:10 AM

Wrathlon69 said:
Well bad news unfortunately. Ive tested every single combination of everything in both Windows and in Linux with custom outputs etc and its always the same.

There must just be some slight difference between the LVDS controller on these boards and the one on the older NB500 that lets the older one use the panels.


Wrathlon69 said:
I think its something specific with the panel we are using - whats the model number on yours?

The reason being is I found a 15.6" laptop here thats LED 1366x768 and 40 pin LVDS cable and plugged it in to my NB550D and it works perfectly so its NOT a problem with 1366x768 specifically so much as its a problem with this laptop and that specific board.


The screen I bought was sold as LG PHILIPS LP101WH1(TL)(A​3) TLA3

But I can't check the exact number on the screen as I don't have it any more. Also I can't be sure it didn't work because I damaged the connector or because of incompatibility, I'm guessing incompatibilty based on your experiments.
I've noticed there are TLA1 and TLA2 versions of this screen, do you know what these numbers mean? My original screen is TLN1 so perhaps it needs a TLA1...?
March 13, 2013 4:46:03 AM

Not sure what they mean but I think the WH1 range is incompatible...mine was a LP101WH1(TL)(A2). The A3 is just the next revision from the A2.

I have a Toshiba C650D here with a 40 pin 1366x768 15.6" Samsung LTN156AT05-S01 screen in it and it works perfectly on my netbook. The LP101WH1(TL)(A2) works perfectly on the C650D as well so I think it's just that specific panel and our specific laptop.

There is a 10.1" 1366x768 Samsung LTN101AT03 Panel that matches ours (6 bit LVDS, 40 pin, TN TFT Panel) - I'm going to order one of these and see if it works.

Our laptop can obviously drive a 1366x768 panel just fine, Im typing this right now on a 15.6" 1366x768 LCD panel sitting on my bench next to my Netbook with a cable hanging out the side - I just think that specific panel is a no.
March 13, 2013 4:58:09 AM

OK Seeing as Im Australia (No idea where you are) and the panel is coming from Canada it will be a few days before it gets here. Fingers crossed this one works.
March 13, 2013 5:14:02 AM

Wrathlon69 said:
OK Seeing as Im Australia (No idea where you are) and the panel is coming from Canada it will be a few days before it gets here. Fingers crossed this one works.


Great, that sounds promising, fingers double crossed for this panel to work!
Seeing as this little netbook can handle full HD via hdmi out I'm confused as to even why Toshiba didn't put 1366 as the native screen as they barely cost much more than the wsvga screens.
I'm in the U.K by the way.
March 13, 2013 5:21:21 AM

Well this panel is $9 more than the original OEM panel :p 

Really shits me, its an amazing netbook otherwise. The only problems really are the 1024x600 screen, 1GB RAM and Windows 7 Starter.

Windows 7 is neither here nor there, the RAM is a total non issue as its so cheap, just this panel.

At least Ive proved it CAN drive a 1366x768 panel just fine, which is a good start...just have to find the right panel :D 
March 13, 2013 5:41:13 AM

Wrathlon69 said:
Well this panel is $9 more than the original OEM panel :p 

Really shits me, its an amazing netbook otherwise. The only problems really are the 1024x600 screen, 1GB RAM and Windows 7 Starter.

Windows 7 is neither here nor there, the RAM is a total non issue as its so cheap, just this panel.

At least Ive proved it CAN drive a 1366x768 panel just fine, which is a good start...just have to find the right panel :D 


Yes I think Toshiba really mis-sold this netbook as it's more capable than how they sell it. I've installed an SSD and 4GB of ram running windows 8 pro and it runs really well for something this size. I've even read that the 8GB sticks work too.
March 14, 2013 9:50:18 PM

Just a quick update, the Samsung panel should be here on Monday (It's Friday now), fingers crossed :D 
March 15, 2013 4:55:00 PM

Wrathlon69 said:
Just a quick update, the Samsung panel should be here on Monday (It's Friday now), fingers crossed :D 


Here's hoping....:)  I've managed to get my old display back up and running again with a new lcd cable for now.
March 15, 2013 10:00:22 PM

Im taking this time to hack up a 4 port USB hub and rewire the data pins from my USB module so that the power is still supplied by the board but the data is provided by the hub to give me an extra spot to connect the touch screen panel I bought :D 
March 17, 2013 7:04:29 PM

OK panel arrived and...

...the idiots sent me the LP101WH1 panel again. Despite specifically ordering the LTN101AT03 panel. So sent in a ticket to try and get this resolved. Fuck me.
March 20, 2013 6:11:52 AM

Alrighty, just ordered yet ANOTHER panel, this time from a different source that isnt retarded. I'll keep you posted.
March 24, 2013 3:08:28 AM

Wrathlon69 said:
Alrighty, just ordered yet ANOTHER panel, this time from a different source that isnt retarded. I'll keep you posted.


Only just saw this, that's frustrating. I hope the new one works.

I've had problems with the auto brightness of my screen since refitting the old one. Plugged in it works fine but on battery the screen flickers. Not sure if it's something I've done or if there's a fault somewhere. Anyhow I've managed to disable the auto brightness so on battery its stuck on 50 as a workaround.

March 25, 2013 2:03:38 AM

Its controlled by PWM so if it works at all it's probably the panel itself. Fingers crossed this LTN panel gets here soon.
March 29, 2013 6:00:56 AM

It was nice to find this thread! I'll wait to see if you can find a working LCP panel, as I'd like to increase the resolution of my NB550D screen.
March 29, 2013 9:14:35 PM

Well the panel should be here after the easter long weekend so fingers crossed :D 
April 2, 2013 10:50:20 PM

OK good news everyone - The Samsung LTN101AT03 1366x768 panel works perfectly. Just got it now, plugged it in, fired up, perfect - no corruption at all. Mounting screws are in the same spots, exact same fit as the factory screen.

The plug is on the other side of the panel but as the cable normall comes in from the far side this doesnt affect anything, its actually closer to the cable now.

http://www.ebay.com.au/itm/230882407108 <--- This is where I got mine from, took 14 days to Australia but the Easter Long Weekend was in the middle there so that would have affected it. According to that he still has 4 left.

And to Brett, you might be replacing a few screens every month but doesnt mean you know everything
April 2, 2013 11:03:56 PM

Thanks Wrathlon69!
Now I am tempted to risk a little more and order this - http://www.befr.ebay.be/itm/NEW-NETBOOK-LCD-SAMSUNG-LTN...

1280x800 instead of 1366x768. Is it quite strange that there seems to be at least three versions of the LTN101AT03 - the 1024x600, 1366x768 and 1280x800.
Well, I guess I'll try to reduce the risks and go with the 1366x768 one.
April 2, 2013 11:24:23 PM

The LTN101AT03 only comes in 1366x768. That one you linked says Equiv, so basically its not necessarily that model, mostlikely it will be an LG WSH panel, which while it SHOULD be compatible, it has some weird compatibility problem with our laptop.

I strongly advise against buying a panel from anyone who cant guarantee an LTN101 panel, as I've already been burned by someone providing an incompatible "equivalent" LG WSH instead.

If someone lists an LTN101AT03 and its a resolution other than 1366x768, its a blatantly false and misleading title and I would NOT buy from that source.
April 3, 2013 4:55:18 PM

Wrathlon69 said:
OK good news everyone - The Samsung LTN101AT03 1366x768 panel works perfectly. Just got it now, plugged it in, fired up, perfect - no corruption at all. Mounting screws are in the same spots, exact same fit as the factory screen.


Hey that's great news :wahoo: 
Thanks for taking a gamble on the screen. I'll have a search for that panel. Luckily for the rest of us, you had the right kind of tech knowledge for this project, I'll be interested to hear about how you progress with your touch screen mod too....
April 5, 2013 5:54:20 AM

Ok, I've ordered mine from ebay here, on the 3rd April, got it in Belgium this morning, and is installed and working perfectly! Thanks Wrathlon69, for having done the testing for us!
April 5, 2013 6:11:24 AM

jbbandos said:
Ok, I've ordered mine from ebay here, on the 3rd April, got it in Belgium this morning, and is installed and working perfectly! Thanks Wrathlon69, for having done the testing for us!


That's great! :)  I'm going to order from there too.
Did you receive a Samsung LTN101AT03 screen or is it a compatible screen?
It says in the listing you receive a compatible version of that model, but hopefully all compatible versions of that model will work in the NB550D...
April 5, 2013 8:00:35 AM

carnbot said:
That's great! :)  I'm going to order from there too.
Did you receive a Samsung LTN101AT03 screen or is it a compatible screen?
It says in the listing you receive a compatible version of that model, but hopefully all compatible versions of that model will work in the NB550D...


I got a compatible screen. I was ready to repack and send it back when I checked the ID on the lcd I received and couldn't find anything like LN101AT03, but I decided to test it first, and I am glad I did. It works perfectly, no colour washouts, no problems at all.

Correction - one issue- back-lighting is working the wrong way, increasing decreases the brightness, decreasing increases. Not a problem for me, but might be for some.
!