Anyone in EU actually using the Samsung Screen 12.1" LTN121XL01-N03?

Hi Guys,

first post here as I got a new Picade and trying to exchange the screen to the Samsung Screen 12.1" LTN121XL01-N03. So I bought the LTN121XL01-N03, a fitting controller board and a 12V 4.16A power supply. Unfortunately no matter what I connect via HDMI or DVI the screen stays black.

I suppose the controller board is working because the LED on the button panel is red when power is connected and becomes green when HDMI is connected. I think also the display is the issue as even when I push the “MENU” button on the button panel, nothing appears on the screen.

But right now I’m still unsure who to blame. The screen and the controller board came from China and it would be expensive to send it back. So I had the idea to ask in this forum if anyone in Germany or even the EU is actually using this screen. I’m thinking of sending my screen and controller board to a user with a working combination to find out for real what is the problem.

Of course I would cover the shipping costs. If anyone has another idea what I can do for testing I’m happy to hear.


Where did you get the LTN121XL01-N03? seems not to be able to deliver it any more…

Hi Steffen,

I have the LTN121XL01-N03 panel which I ordered from back in November I think. I also ordered a controller board from ebay from a user named ‘driverboard’.

After I built the system I had strange distortion issues on the display (I made a separate thread on this forum about them) and I didn’t know what was causing the problem between the display and controller board.

I contacted the ebay seller and he sent me another board out which didn’t fix my issues. I was ready to give in because dealing with sellers from China isn’t easy because of language, shipping times, costs, etc.

I noticed another user create a post on here called @coffeefueled who was having issues with his LTN121XL01 and controller board so we decided to do a controller board swap as his ebay seller was different from mine (Chinatobby2011).

@coffeefueled sent me his board first as I was getting an image on my display and he wasn’t. The board I received at first didn’t work and I ended up with a black screen but it turns out one of the connecting cables was fitted in reverse. After I noticed this and fitted it correctly my display sprung to life and I now have a combination of display and controller board which works for me with no distortion.

@coffeefueled should be receiving my faulty board any day now (he lives in the US and I live in the UK). The purpose of sending him my faulty board is I know that it works and will allow the display if its a good one to display an image even if it does have a little distortion. He has had two controller boards from his seller and both have resulted in a black screen.

So there are a few of us recently who have bought the a display from displaysscreen and have bought controller boards from ebay with problems.

So the first question for you Steffen is where did you get your controller board? If it was ebay then who was the seller? The designs of the two boards that I’ve had my hands on are completely different from each other.


thanks for your replies. I bought my screen as well on on February 13, 2018 and I received it on March 1. The controller board I got from eBay (seller “zhongweilz”, see here:

I attached a photo of my board, maybe you could check if it is similar to yours and see if there’s a problem with the cabling on mine too. Unfortunately I have no technical description of the board’s connectors so I can’t check.

Hi Steffen,

I can’t see anything that looks out of place on your board compared to the ones I have here. If you want, I don’t mind trying out your controller board on my display if that will help you? I know how frustrating it can be as my issues lasted a few months before I board swapped with a member here too.

I wouldn’t want your screen posted though, they are too fragile and worth too much in working condition to post back and forward. If your controller were to work with mine then you would know right away you’ve got a screen issue
My Picade isn’t fully assembled at the moment due to trying different controller boards, etc recently so now would be a good time to try your one if you want?

Hi Dave,

perfect, let’s do it this way. Could you send me your address via private message (if that is possible here)?

Hi guys,

Received my LTN121XL01-N03 from displayscreen recently and get nothing but a black screen as well. Panel also looks like it could be used, with marks all around the back.

Tried 2 different controller boards from eBay designed to work with it, and 2 power adapters (12V 2A and 3A), still nothing. Shouldn’t I at least get an OSD if the panel is working? Unless I plugged it in wrong (pretty sure only one way), then my panel is DOA.

I wish they sold it with the 12.1" to begin with, so far it’s been a huge pain trying to get the parts and now this. In any case I sent an e-mail asking for RMA, will report back.

Hi Picard,

yeah same here. I sent my controller board to Dave who has a working screen and it turned out that my board was able to put an image on his display (although distorted but that seems to be the often seen controller board model issue). My screen with this controller was also blank and yes also no OSD - I exactly thought the same here that I should at least get a menu.

So yours and my displays seems to be DOA. Somewhere in this forum someone mentioned that this seems to be happening a lot in the last time from I didn’t complain yet to them as I ordered a different controller board model - the one you have (probably from eBay chinatobby).

So please keep me informed about the RMA but I would think we can write the money off. Why should they react? It’s not eBay or Amazon and they are in China so they’ll probably just sit it out.

Another thought that came to my mind: either they are (deliberately?) sending defective displays or the displays are fake Samsung LTN121XL01 and that’s why the controller boards don’t work.

I just wonder why nobody was able to find out in which device(s) this display was used. It would be much easier to buy this used device for cheap and take out the display.

Update: I just got a $40 refund from Displayscreen for the bad panel, they offered $30 compensation or a full refund if I send it back - I replied saying $50 is fair for the trouble, and they settled on $40.

Sending it to China would’ve probably cost more than the difference and still no guarantee, so I took what I could get. So if you receive a bad screen you can at least know what to expect in terms of refund.

I agreed two weeks ago for a refund of $60 with them for a defective LTN121XL01-N03, still waiting for the money…

The good news are that I bought a used LTN121XL01-N03 on AliExpress and it works great! See my post in another thread.

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Thank you very much for this information, I just placed an order there myself. Looking forward to receive it…

Just got the display from AliExpress and can confirm it is working (with the driver board from eBay chinatobby).

So thanks again, now I will try to get my money back form displaysscreens. The strange thing is that their display had a “Made in China” label one it, the working one is “Made in Korea”. Either they really produced it in different locations or it is just a fake.

I’m using an LTN121XL01 (AliExpress) with the controller from Chinatobby (ebay).

I would like to configure the screen it to power off automatically when no signal is coming, in case I forget to switch power off after shutting down the system using the ES menu. Unfortunately, I cannot set the “auto power off” delay in the controller’s menu to anything other than “off” (I can set it but it comes back to “off” when leaving the menu).

Does anybody have a solution?

Regards, Patrick

UPDATE 180522: the delay option in the settings did not work, but it seems that now the background lighting LEDs are switched off a few seconds after the HDMI signal disappears, which is exactly what I wanted.