Question Jumper Technology Ezbook x3 LCD

[Techiehobby1]

@Tech Junky

If you look at this image, it displays both connectors, but if you look above the 30pin connector you can see the fpc that is connected physically to this pcb
This is where I am very very confused...
Ive tried researching all those part numbers, but nothing comes up

 

[Tech Junky]

I can't tell form the pic either. Larger connectors usually mean more bandwidth. Does the panel connect to that and then another cable front the side or bottom to the mobo edp connector? The other end of the cables might give us a clue.

This is where photos before pulling things apart help in putting it back together if it's your first experience with this sort of thing. Having a service manual would help too.

 

[Techiehobby1]

@Tech Junky

1st image - full overhead view of the back of the panel and lid:

Displaying the 2 x fpc's (in image are both coming in from the left side ) from the LCD/TFT to this long SHARP manufacture motherboard which I believe is a TCON.

Then outputting from the SHARP motherboard are 2 x connectors (1 x 10pin and 1 x 30pin)

Both of these connectors plug into a second (BLACK) pcb (separately)..
1 connector which is twisted wires that are soldered to an FPC cable, which then plugs in the 30pin connector of Black pcb;
2nd connector is 10 x twisted wires that then connects to another 10pin connector which is then connected to the other connector on the Black pcb.

Underneath the black tape (which I forgot to remove) is another 30pin connector....this connects to the flex cable, which splits to the fpc connector that plugs into the main motherboard LCD connector, and also up to the webcam.

The second, third and forth images are just close up views for you

The 5th image is the back of the Black pcb

1st image


2nd image


3rd image


4th image


5th image

 

[Tech Junky]

Well, the final photo gives me a clue but, doesn't make much sense why it's needed nor the PCB on the back of the panel.

LVDS is a legacy way panels used to get hooked up. The thought passed my mind when you mentioned the 10-pin but, didn't think it actually could be a possibility. The PCB across the bottom the panel does a passthrough 30<>30 and it would appear the 10-pin might be for the backlighting function?

They sure did a number on obfuscating things here. If I pull my panel off there's just the single EDP cable and then the other functions are separate to the cam / wifi / etc.

This cost cutting measure they're doing is a real pain w/o documentation. All sorts of hidden mess behind the screen.



Looks like we're going to be looking at LVDS panels for the interface type instead of EDP. SMH

 

[Techiehobby1]

@Tech Junky
Exactly my issue. I have tried reaching out to the Manufacturer of the laptop Shezhen Jumper Technology. Sadly, they are either do not know how to convert English to Chinese and not understanding, or they are purposely ignoring me because I have nothing to offer them in return for any information.

Okay so have you got any more thoughts.

I am thinking about just buying a second hand one spares or repairs and just rob the screen

 

[Tech Junky]

I am thinking about just buying a second hand one spares or repairs and just rob the screen

They seem cheap enough under $200. In reality a new panel typically runs ~$75 anyway and you'll have spares for other things as it continues to age.

My only thought would be remove the drive board and just plug the EDP cable directly into a replacement panel. The only iffy thing is whether the GPU will support it or if it's coded to use LVDS only.

 

[Techiehobby1]

Which one is the drive board? would that be the Black pcb?

 

[Tech Junky]

The whole setup behind the panel. Just getting rid of it and plugging in the EDP to the panel directly from the MOBO.

But the driver board is the PCB across the back of the panel on the bottom where the 2 plugs plugin.

 

[Techiehobby1]

@Tech Junky
The only issue with that is that the Drive board does not plug into the LCD and is directly connected (soldered/heat applied) or however it is affixed to the drive board.
The 2 orangey brown fpc's (shown in 1st image and zoomed in 3rd image)

 

[Tech Junky]

Are you talking about the ribbon cables between the LVDS adapter and the driver board and the driver board to the panel?

The idea is to disconnect the EDP cable from the square adapter board and connect it directly to a new panel. Then toss all of it in a box or bag and not look back unless the new panel doesn't work. It's just an added PITA that likely doesn't need to be there in the first place.

So, knowing this driver board / adapter run s about $10-$15 there's potential this is the issue unless the screen is damaged.

Oh, and I found the reason I was looking at FHD panels...


Another snap shows the PC capable of 120hz though even though in this size the max is 60hz w/ a 30p cable. If you pull the tape off the cable I circled that connects to the LVDS adapter how many pins do you have there? Might be 40p since HWI shows 120hz capability from the PC side.

 

[Techiehobby1]

@Tech Junky
No not the ribbon cable between LVDS and the driver board..but the driver board to the panel.
The 2 ribbon cables that come out of the driver board and go straight into the panel. This connection is not a connector and has been installed using micro soldering or heat

 

[Tech Junky]

I think you're getting stuck on dwelling on the LVDS and rats nest of a solution they used.

My point is to toss it all and get an EDP panel instead of dealing with all of the cables. Just hook the new panel up to the EDP cable directly from the MOBO.

The issue at this point is taking the tape off the EDP cable from the MOBO to get a pin count as it could be 30 or 40.

 

[Techiehobby1]

@Tech Junky
Hi, yes you are correct.. I am getting in a mucking fuddle (haha see what I did there)
The RATS nest is a complete rats nest and completely threw me off track....... besides the whole point of my original request was to locate a replacement panel.
So what you are saying is now totally understandable.
I will source a replacement panel following your directions and guidance above...

Lastly, per your request.. under the tape is a connector with 28 pins (not 30pin or 40pin) and on top of that, the ribbon cable that plugs in to the Black pcb also only has 28 pins 🤷‍♂️ 🤷‍♂️

 

[Tech Junky]

28 pins is a bit odd. Knowing that these cables aren't a 1:1 pinout though means there's probably an adapter you could use.

Since it's an Intel CPU and using a UHD igpu it should natively support EDP. It's going to take a little detective work to find the pieces but I think it's doable. If not an adapter there might be a cable that goes from the mobo to the panel that would convert or even the mobo side might be 30 pin natively this just need a 30 pin cable replacement.

 

[Techiehobby1]

@Tech Junky
I’ve just counted the connector which is attached to the mobo and that has 34 pins going into it…also the ribbon cable coming out of the panel that directly connects to the LCD mobo connector has 34 tracks

 

[Techiehobby1]

@Tech Junky
Further to the above...
I have decided to go in deeper with investigation to see what on earth this manufacturer was playing at, and you will not believe your eyes....
See below image


YEP!!!!! a 34 pin connector but only "21" wires are used between MOBO and input to Black pcb
(INET-P313-EDP-TO-LDVS-CS511-REV12) 🤦‍♂️ 🤦‍♂️

 

[Techiehobby1]

From my experience (which is very minimal) - I believe they are treating this like it is a SCART lead but without the monstrous size plug... which would look silly sticking out of the side of a laptop haha
and so that Black pcb is converting a SCART input into an edp or lvds output... is it not??

 

[Tech Junky]

silly

Considering what you've uncovered so far I wouldn't say that too loudly or it might happen.

Now considering you were thinking about picking up a parts cadaver to transplant parts from maybe it's time to upgrade and put this aside as a project piece instead? I mean it does work with a tv/monitor plugged in so it's not totally useless but it is a bit of a tech nightmare.

I've helped quite a number of people do lcd swaps and this one has me baffled a bit. They didn't cut corners but jumped whole blocks of common sense to make this thing.

So, is the display physically broken or is it just not working? If it's not working my first attack angle would be the lvds adapter everything plugs into. At $10 it's a cheap step towards narrowing down the issue. If it's the driver board on the panel then that makes it less cost effective to deal with.

Personally I like a challenge but also don't like wasting time and money when a replacement is the solution.

 

[Techiehobby1]

The screen is cracked and not able to display a picture sadly, so i'm pretty sure the driver is not the issue.

I am shocked that I have baffled you with this one. I know what you mean though.. I kind of thought well its going to be cheaply made and some corners may have been cut... but this is like they have started a race, then just drove through every obstacle in a straight direction and towards the finish line, so cutting out nearly all of a race track apart from crossing over the tracks paths from time to time haha

Haha could you just imagine a SCART connector hanging out of the side of a laptop.. I definitely wouldn't want to have that laptop resting on my legs due its wall thickness.

 

[Tech Junky]

Maybe someone will chime in when searching for the same laptop but I'm out of ideas.

I've redone and upgraded my laptops and found ways to reengineer other tech devices but, this one seems to be more of a challenge than it's worth considering the current sales price. 1/3 or more of its current price is the panel itself and that just doesn't make financial sense.

I'd probably repurpose it as a NAS with a das hooked up to it. Only need a screen for setup of Linux and configuring a few things to make that work.

 

[Techiehobby1]

@Tech Junky
Thank you ever so much for all the input you have given to me though so far. I know it’s probably not the outcome I was hoping for, and I know you was determined to get to the bottom of it for me.
Without your help though I would have been extremely lost and not have even known where to start.

Thanks again….
One last thought..

Is it worth me starting a new thread just incase someone else has seen this type of behaviour before.
Thanks again though
Paul

 

[Tech Junky]

You're welcome!

Starting a new thread would just be the same as this one. It will live on and someone might find it helpful too. Maybe someone will find it and have better luck figuring out a solution.

I've not run across many things I can't figure out. You're laptop though seems to be a mishmash of one off pieces being used though. Usually it's not this difficult to reverse engineer things.

If you want a better documented setup though Clevo is a winner with great documentation and schematics. They're priced better than the average laptop as well. I've only found one place that sells them barebones though which cuts the cost even further.
https://rjtech.com/shop/index.php?dispatch=categories.view&category_id=220 -- $649 starting cost with an I5 13th gen CPU.

Clevo gets resold under a ton of different names though which can lead to a more local retailer for tax/shipping purposes. The nice thing about RJT though is there's no extra charges for either of those. https://www.clevo.com.tw/product/product_main Looks like they redesigned the site and don't list all of the models like they used to.

clevo - SuggestALaptop

r/SuggestALaptop: A place for prospective laptop buyers to get suggestions from people who know the intimate details of the hardware. Please use the …

www.reddit.com

 

[Techiehobby1]

@Tech Junky
Hi again...
So I tried a new thread but that has struck a complete ZERO...

That aside, I decided to order a second hand "FAULTY" Ezbook X3 model which turned up today (it was cheap deal)....
Now I have another issue...
The identical Model must have been a Revision because the LCD Panel model number is 133X56-105-0301 (different from the 133x56-105-0101) so even the LCD panel has been upgraded at Manufacturer (because all the manufacturer security seals were in tact).
So I plugged this panel in (without the mini Black pcb) BUT it powers up MINUS the "Backlight"

SO... how can I get this Panel to work please?
Is there any wiring diagram for the 133x56-105-0101 and the 133x56-105-0301??

 

[Tech Junky]

BUT it powers up MINUS the "Backlight"

SO... how can I get this Panel to work

This seems to be conflicting info.

So, the new panel doesn't have the lvds connection? There's still the issue of the wiring bring inconsistent. Did you pull the cable harnesses from the donor laptop for the screen?

 

[Techiehobby1]

@Tech Junky
I can see the laptop powering up, and I can see (very very dimly) the display and Windows loading screen.

Yes, I pulled the cable harness from the donor laptop, because they even revised the camera, so I pulled that camera board as well and swapped it over.

Correct this one doesn't (well at least I am sure) have the LVDS connection.
It has a LCSC JUSHUO ALC04-S50EIA-00 connector, which from my understanding is the eDP1.4 30 pins Connector