Question VGA out of range with GC games

[Benge]

Hello, I have some problems

My VGA screen says "out of range" when I run a GC game on my O-Wii.
The screen is wired in VGA mode, when it was still in comoposite it works fine with gamecube games
Only Wii games work well with VGA

This is very strange because the resolution of Gamecube Games is lower than 800x480
I do not know if it can come from my card, can be its firmware ?

My screen : 7inch, 800x480, 50 PIN TTL
My screen board : PCB800099-V.9
Link : https://fr.aliexpress.com/item/32840229823.html?spm=a2g0s.9042311.0.0.27426c37qoALoX

Does anyone have a solution/same issue ?

 

[Aurelio]

It seems to be an issue caused by the screen not supporting interlaced games. Try forcing progressive by pressing B on a selected game and enabling the option.

 

[Benge]

Forcing progressive work, thank you very much @Aurelio
I have another problem it is with the U-Amp, at times random it starts to make strange "Skrrzzzrrkkrk" and continuous.
And when I restart it works again, I until he remakes the weird noise

 

[Aurelio]

Forcing progressive work, thank you very much @Aurelio
I have another problem it is with the U-Amp, at times random it starts to make strange "Skrrzzzrrkkrk" and continuous.
And when I restart it works again, I until he remakes the weird noise

Have you wired i2s audio? If so it might be some interference on the master clock line. Try twisting the wire with a ground wire

 

[Benge]

Yes I wired i2s,
I will try to as you say.
It is true that there is a lot of wire passing aside, it is possible that there is interference.

other than that the sound is really good

 

[Benge]

Twisting the wire with a ground wire work very well, thank you @Aurelio
I tested for a while and I no longer had the interference problem