ION screens with tiny green dotty lines

I'm sure it's either the wye adaptor itself or the DVI port on the console but lately I have been seeing tiny green dashed and dotted lines on my monitors. Older style ION with only one DVI port. Even though I always screw the DVI down when I move it around slightly they either get a little worse or go away.

Best to purchase a new Wye first to see if it's that? If so what is the exact DVI type I need on both ends?

If I need to send the console for repairs can it be done at the Hollywood location or does it need to be shipped to Middleton?

Either way would there possibly be a loaner available?