Button set on cube - only sends out crushed ice

No , the panel is probably ok .
1 ) remove the ice bin
2 ) in the back of the freezer , you'll see a square hole , with a white rectangle piece inside , which you should be able to lift upward , with your finger . If this piece doesn't lift , then it may be corroded with rust , or be bad . When you call for cubes , this piece lifts up and in the process , lifts the long rod , attached to the ice bin . When the rod lifts , it opens the bin flap , allowing cubes to be dispensed . If it does not lift , the cubes will be ground against the cutters , therefore , dispensing crushed ice .
3 ) to access this solenoid which lifts the cube actuator , remove the 3 or 4 screws on the sides of the PANEL , and with the panel removed , you will have access to the solenoid and actuator .
4 ) you can check the solenoid for continuity , voltage ( when arm pressed for cubes) , or possibly a loose wire .