Ice maker overfilling with water. Will not stop filling once it starts

Aloha, I have the model above where the ice maker is overfilling and will not stop. I ordered a new water valve and installed it. No change the water still runs out and will not stop with the icemaker on. The ice maker does not have a test button nor does it have the to inlets to jump start it. The ice maker is also out of manufacturing. Do you think it is the ice maker or a control board issue? Thank you, Steve