Korg M50 Touch Screen not working

[Gib]

Hello,
My touch screen works for about a minute then stops working and I can only use it again for the same amount of time the next day.
I’ve done a bit of research and it seems that the digitiser screen is at fault.
Is this correct?
Also does anyone have an idea how much this will cost to repair with a Korg approved repairer in the U.K?
Thanks