I have 3 screens. All connect together via a powered VGA splitter. 2 screens are Lilliput EBY701 and the other is a 15.4 Shark screen. The SHark is picky though and will only work at 50 hertz, but when I set this setting, the EBY701s turn blue. Is there anyway for me to change it so the EBY701s will accept 50 hertz? I think right now they are on 60 hertz.