Product review (5 stars): Check the Test button first
I had problems with my LG Icemaker, and the pricing here on Amazon is very favorable for the replacement unit.

I would suggest, however, that before buying this new unit, press the "TEST" button on the bottom right side of the unit.  My icemaker just stopped cycling.  No water spilling, or no water, or warped tray.  It just refused to resume cycling after I removed and replaced the bucket to clear an ice jam.  I was about to buy a new part when I took the unit out make sure I could replace it.  I noticed a TEST button, reconnected the electrical connector and pressed that button, and it immediately cycled.  I don't know whether that button reset the controls or if something was jammed and it forced it to cycle.  The unit has been working for several days.  You can press that button without even taking the unit out; just take the bucket out and look underneath on the right side.  And make sure the ON-OFF button is switched ON!