Something Broken
From Cricut Hacking Wiki
Broken Parts
Problem
Broken Dials occur easily if the machine falls and lands on the front.
Solution
Finding replacement parts, is pretty much the only option.
Problem
Broken Trace on the Motherboard, can happen if the machine is dropped.
Solution
This will take very good electrical troubleshooting and soldering skills. Some of these traces are in a middle layer of the PCB which makes this process more difficult but not impossible, since the 3 layers boards are nearly identical to the 2 layer version.
