GBA ITA TFT screen Interlaced styled video | Game Boy | Page 1

spice heart Mar 3, 2025, 5:59 PM

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Hello! The other day I installed an ITA TFT screen from FunnyPlaying and so far it's awesome. It looks really good however I noticed an issue that's been bothering me since I got it. Whenever there's horizontal scrolling there is what almost looks like interlace video scroll on certain graphics. While I adjusted to potentiometer to get rid of the real bad stuff I wonder if I could further tune the display to get rid of this effect. If I can't then at the very least the frame interpolation being turned on removes the effect however, the big downside with that is the reduced motion clarity of the screen. If there's a way to remove this uneven scroll without using that mode that'd be great.

serene peakBOT Mar 3, 2025, 5:59 PM

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spice heart Hello! The other day I installed an ITA TFT screen from FunnyPlaying and so far ...

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sudden stump Mar 4, 2025, 8:24 PM

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Are you certain that the game doesn't just do this? A lot of games are kinda blurry and smeary on original hardware and I frequently see people complaining about game bug because they never saw it before on the original screen.

The FRM feature exists solely to smooth out the rough animations that just don't really manifest on the blurry OEM screens.

spice heart Mar 4, 2025, 8:49 PM

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That's honesly quite possible

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I'm planning on testing it with a Friends DS Lite in a few days. I'll also test this on Emulation as well

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Though I don't remember this effect manifesting on my previous IPS screen

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Either way as you mentioned the FRM effect does a great job masking stuff like this at the loss of motion clarity, but also these strange visual effects aren't super visible during gameplay

spice heart Mar 4, 2025, 9:10 PM

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The effect isn't visible on emulation

rose elk Mar 4, 2025, 9:21 PM

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have you installed it on a 32 or 40 pin gba?

spice heart Mar 4, 2025, 9:25 PM

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40 pin. But i removed the required capacitor like the guide said

rose elk Mar 4, 2025, 9:26 PM

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that's what i wanted to know. when you turn the potentiometer, how far have you turned it? you really only need to turn it very slightly. maybe try it again. the other thing that comes to my mind is to take out the ribbon cable, clean it once and reinsert it. it is enough to touch it once at the front for contact problems to occur

spice heart Mar 4, 2025, 9:29 PM

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I cleaned and reseated the ribon the ribbon cable already. Ill try doing some micro adjustments to the potentiometer when I get home

rose elk Mar 4, 2025, 9:46 PM

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yep, try it again, it´s worth a try. 1/16 turn makes already a noticeable difference, just so you have an idea.

spice heart Mar 4, 2025, 9:47 PM

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Yep I can imagine!

sudden stump Mar 4, 2025, 9:48 PM

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If you have a flash cart, the "AGS Aging" software provides a fantastic test pattern for getting these screens tuned.

spice heart Mar 4, 2025, 9:50 PM

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I don't sadly so I kinda got to eyeball it

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I also noticed a similar effect to mine in this video at the 19 minute 20 second mark. Look at the scrolling rocks at the bottom of the screen

https://youtu.be/BC6lyvxAhaw?feature=shared

YouTube

Macho Nacho Productions

Latest LCD Upgrade for the GBA | Laminated ITA Kit

Laminated ITA LCD Mod For the GBA Is A Drop-In, No Solder Kit!

FunnyPlaying just released a laminated ITA LCD mod kit for the original Game Boy Advance! This kit offers a more authentic retro look because it uses a Nintendo DSi LCD panel which looks similar to an AGS-101 screen. This also has the benefit of being slightly more power efficient...

▶ Play video

sudden stump Mar 4, 2025, 9:52 PM

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You linked a 13 minute video.

spice heart Mar 4, 2025, 9:53 PM

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Im so sorry hahaha. I meant the 9 minute 20 second mark

sudden stump Mar 4, 2025, 9:55 PM

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I don't see anything in motion and even frame by frame, I don't see any interlacing.

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sudden stump Mar 4, 2025, 9:58 PM

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rose elk that's what i wanted to know. when you turn the potentiometer, how far have you ...

I think you need to spend more time tuning it, like olDirdey suggested.

spice heart Mar 4, 2025, 9:59 PM

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Im doing that as we speak

spice heart Mar 4, 2025, 10:04 PM

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sudden stump

It could be the jailbars/horizontal bright lines I'm seeing. Look at the motion frames

rose elk Mar 4, 2025, 10:05 PM

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this seems normal with the game on a ita screen

spice heart Mar 4, 2025, 10:13 PM

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Yeah your right. I adjusted the screen and yeah it seems the effect has mitigated itself. It could just be the contrast I'm seeing between bright and dark frames

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Ill keep adjusting to see if I can completely remove the effect

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I feel like the guy from the Incredibles right now

rose elk Mar 4, 2025, 10:24 PM

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I don´t know him, did you fix it? :D

spice heart Mar 4, 2025, 10:35 PM

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It's definitely reduced now

spice heart Mar 4, 2025, 10:36 PM

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sudden stump Are you certain that the game doesn't just do this? A lot of games are kinda blu...

Im starting to think its just a byproduct of the display like suggested here

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One thing worth mentioning is that the effect is fixed when frame blending is on. However frame blending also reduces motion clarity on the display.

In a few days I'll test motion clarity on the DS Lite to see how each mode lines up

spice heart Mar 4, 2025, 11:04 PM

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For right now though I'll keep fine tuning the handheld to see if I can reach a fix. Ill also try another clean of the ribbon cable

sudden stump Mar 5, 2025, 1:21 AM

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spice heart One thing worth mentioning is that the effect is fixed when frame blending is on...

Well that's kinda the intent. The original screens are a blurry, ghosting mess. FRM intentionally smears the screen to mitigate the faster response times of newer screens.

If motion clarity is important to you, a regular IPS kit would have been a better buy over ITA. ITA kits use DSi panels which are not exactly known for their motion clarity either (though they're a lot better than AGB).

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Also, it's a Game Boy. I think you're over thinking it.

spice heart Mar 5, 2025, 1:26 AM

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Yeah I realized that

#GBA ITA TFT screen Interlaced styled video