I’ve had cable issues as well. My touchscreen will flash the “S” logo when starting up but will go black and unresponsive afterwards.
How did you solve your cable failing completely?
Seeing as the original post is months old, they probably contacted Support for replacement parts, or switched to driving their Snapmaker entirely through the USB mini-B port, which should bypass the screen.
The touchscreen cable end connector seems to be fragile and multiple people have had them pull apart.