Red Light Showing When Loading Any Core

[metalfacemark]

So ive moved my mister from my arcade cab, back to my CRT monitor - i get display no problem but when im loading any core that isnt an arcade core - the mister goes to just a red light on the mister and a blank screen.

Ive never seen this before so im completely puzzled by it, does anyone have any ideas what could be wrong?

[rhester72]

Red light - completely normal.

Blank screen - likely a refresh rate issue conflict between your arcade display and the CRT. Make sure you've removed or commented out any arcade-monitor-specific modelines and the like from MiSTer.ini.

[metalfacemark]

Thanks