The Ice maker on this refrigerator is not working. I'm wondering about the emitter boards on this unit since there is no indicator light with flapper closed or open. The emitter is turned on. All ice maker components, emitter boards, everything associated with ice maker is on the freezer door so this unit is a bit different from anything I have encountered in the past. How can I test the emitter boards on this unit and do you have any info on interpreting those test results?