Is this because the CPS2 battery is dead?

[gigagiga44]

I found an old CPS2 board in the closet.
When I connect it with JAMMA and turn on the power, the screen is displayed, but the color of the screen is very greenish.
(No red color appearing?)
I live in Japan.
When I called the PCB Shop in Japan, they said, "The battery is dead."
But I have doubts.
There was a board other than CPS2 that had exactly the same symptoms (Fighters History).
Since this symptom occurs even on a board that does not use batteries, is there another possible cause?

[mirkvid]

If the cps2 game boots, the battery is fine. Since both games you tried have the same symptoms, this sounds like a monitor issue to me. Does every game look green?

[gigagiga44]

If the cps2 game boots, the battery is fine. Since both games you tried have the same symptoms, this sounds like a monitor issue to me. Does every game look green?

Yes, "SSF2X" and "Fighters History" have the same color. (I uploaded the image. I sold the Fighters history board so I no longer own it).

The video is displayed through an upscan converter.
I did Fighters History with OSSC and SSF2X with Frame Meister.
Do I need to make any adjustments? ?

Edit: Color display is normal in Hyper NeoGeo64's Asura Zanmaden. I am using OSSC.