In previous posts here I have read that the real problem is finding a replacement icemaker which will fit in the built-in hole in our bars and that does not require a drain.
I am on about my third U-Line now. The early ones did not last very long. However, each later model had significant improvements over its predecessor. My current one has gone about 20 years and has been great! The ice is about zero degrees (F), rock hard and just right for the Captain's Martini. I do turn it off when we are not on board, which is about 9 months per year so it really only has about 5 years of wear on it. Many of the drain-type icemakers depend on the older ice melting in order to keep fresh, so temperature is only about 32 degrees. Fine for an ice pack, but not a martini!
Our icemaker may be the most important device on board for maintaining crew happiness. I would try to repair the one you have. Make sure you get someone who knows U-Lines, however, as I have spent a lot of time trying to get the microswitches that time the water inflow adjusted correctly. (Very difficult to concentrate while rumbles of mutiny and threats of "The Plank" are heard from down below, intersperced with shouts of "Where's our ice?"!)
Let us know what brand you choose if you replace it.