Dvd duplicator screen frozen , advice?

The main unit that is used to operate duplicator is frozen. When the display comes on. The menu don’t come up. Just black squares all across the LCD

Any help would be greatly appreciated. Thanks.

Welcome to the forum.
I would think the unit will need a professional engineer to check it out.

If the unit is out of warranty. You could open it up yourself and remove the power from each optical drive in turn, and see if the unit will boot.
Also make sure there is no media in any of the drives, before opening the unit up.

Other than that, I think the unit will require a pro to check it out.

Controller is broken maybe a reflash but you can buy new controllers they arent too pricy

Maybe a memory-problem?