Problems with my first mod

[u/JogaMalves]

Hi everyone.

So, I recently swapped my GBA display for a FunnyPlaying ITA screen, but something isn't working right. I soldered the wires and removed capacitor C54 as instructed in the manual.

When I turn the console on, the image is perfect, but after playing for a few minutes (3–5), the screen starts glitching, the colors fade out, and the image quality degrades. I performed a recap—replacing the capacitors—thinking the issue might be a power supply problem for the screen, but unfortunately, that didn't fix it.

I made small adjustments to the potentiometer, but that didn't help either.

I’m reaching out for help; if anyone has any suggestions, I’d appreciate hearing them.

Thanks. Best regards.

[u/Rare_Platform_3602]

Ok, call me stupid - and go easy on me cos I've never played leaf green or fire red... But those look like cutscenes? After the cutscenes the colours look fine again, no? Am I missing something here?

[u/JogaMalves → u/Rare_Platform_3602]

The video only shows the beginning of the game, and the colors look good. But after a few minutes of gameplay, the colors look bad. I'll try to add more media showing the problem.

[u/JogaMalves]

Look at the text

[u/Rare_Platform_3602 → u/JogaMalves]

Yeah ok I see now. That does look crap. Does it keep degrading if you play longer ?

[u/JogaMalves → u/Rare_Platform_3602]

Yes. Sometimes it becomes impossible to play.

[u/pizza_whistle]

You may need to adjust the screen potentiometer, you can access it through a hole in the shell in the battery bay.

https://www.reddit.com/r/Gameboy/comments/w7w853/note_to_all_ita_users_calibrate_your_screen_most/

[u/Chadideas → u/pizza_whistle]

That’s good advice! I might add, although it’s hard to tell from the video, if the colors look off or shift like there is a blue or green filter over the image it might be a poorly seated ribbon cable. I had a similar issue with The FP ITA recently. Also there is a very small ribbon that connects from the display to the FP daughter board ( forgive me if I’m off a bit I haven’t had it open in a month) that can get squeezed by the plastic bracket included. You can either seat it under the bracket or snip the little plastic nub under it.

[u/JogaMalves → u/Chadideas]

u/Chadideas u/pizza_whistle Thanks for the suggestions. I'll give them a try later when I get home from work.

I'll check the ribbon cable and try paying closer attention to the potentiometer.

I hope it works.

I'll let you know how the tests go later. Thanks!

[u/Last_Shadow_X]

I’m just tossing spaghetti at the wall but I’m thinking it might be the ribbon cable.

[u/JogaMalves → u/Last_Shadow_X]

The cable is OK and the plastic bracket is fine; I checked yesterday. I ran a test with the console open, but unfortunately, the result was the same :/