Please help - 12.1 display issue

@dave297 wrote:

Hi, I’m tearing my hair out with a new Picade build using the Samsung LTN121XL01-N03 12.1 screen.

I bought a BYO Picade, Samsung screen from displaysscreen.com and LCD controller board from ebay (item number 162644054206).

The issue I’m having is with some sort of interference on the screen. On a specific area of the screen there are these stripes that move like an old 80’s Spectrum loading screen (sorry, that seemed best way to describe). This only happens on the area when its bright white. When I hit the SELECT button to turn on screensaver it disappears as the screen is slightly duller.

Here’s what I’ve tried so far -

1. I’ve connected up the Picade to an external monitor and there are no issues on the monitor, all looks good.

2. I’ve purchased 2 new power supplies with the recommended ratings and there is no difference.

3. I’ve changed the settings on the startup so that the screen is HDMI with 4:3 and 1024x768 (2 and 16 if I remember correctly).

4. I’ve tried a 2nd controller board from the same seller and it has the exact same results.

I’m at the end of my tether now as all this was bought in November and I was hoping to have it up and running for my son by Christmas (2017!).

Has anyone had any issues like this with this screen or would have any idea what could be causing this?

Choosing ZOOM mode through the TV controller board settings makes the problem disappear. As soon as I choose FULL or 4:3 the problem comes back. All the fonts look clear and sharp all the time without any image wobble like I’ve seen with other 12.1 issues on here.

I’ve attached a photo showing the issue.

Many thanks for reading.

sMFTk2l.jpg1600x1200 233 KB

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