Vava chroma high pitched ringing

I have a high pitched ringing that is gone when eye protection is enabled and comes back when eye protection is disabled.

Hello, @Sulindic Thank you for notifying us about this issue. We will look into this immediately. Would you be so kind to try the following steps to see if it solves the issue? Please try performing a factory reset. Once the projector is reset, please make sure that the projector has the latest firmware.

If you could share with us where did you purchase the chroma?