Searching help to use the arcade monitor of a virtua striker 2 cab

[ame.masia]

Hello everybody, I'm writing from Italy, this is my first message here.
Excuse my English, maybe I don't know all needed words to describe and explain what i need, forgive me if this happens.

I have a Sega cab with a Samsung monitor and i want to connect it to an orange pi board with an hdmi to vga out and a gbs8100 vga to cga converter.

I can also use a raspberry pi instead if needed.

I know it's not the best quality setup for a good video output, but for now this is what i have...

My gbs8100 board should be able to output rgb-synch signal to the monitor and i successfully use it on another cab with this same setup. That screen is a 15khz one, while this seems to be a 25khz one.
On the screen main board there is a double connector high low, is that to output 15khz on this screen?
How should i connect my board to the screen?
If i connect using the 5 wiires you see in the photos that are output of the gbs8100 i have black screen with some moving lines on screen as you can see on one of the photos.
In the attachments:
The screen model number
The high low connector
An unknown connector
The cab has no board inside
The input "connector"

[ame.masia]

Every little help or information would be greatly appreciated...
Thanks!

[jennifer]

My first thought would be a signal issue, And would double down on making sure that chassis works at all by plugging a good board to it as a jumping off point, That high/ Low would be yoke induction I am guessing and taking a reading of the horizontal winding would be a good double check to be plugged into the high side.

[grantspain]

sanwa pm1745, change resolution jumper from high to low so the chassis is then set to 15khz

[ame.masia]

I was working all day, i saw replies just now, thanks for suggestion, i will try tomorrow and report.
Thanks

[grantspain]

also white wire on japanese cabs is ground so you need to swap the white and blue/white wires on the rgb

[ame.masia]

Thanks for this suggestion! I was wondering about that white cable that was not corresponding with other wires connected to it.
I didn't had any success yet with my complex setup, I'm waiting to have a pandora's box and then try with an easier setup to find a solution.