I have an Amana model TX20ML refrigewrator(1989)with an icemaker that quit. No water is getting into the icemaker. There are 6 points on the icemaker module where voltage/resistance measurements can be taken. Where can I find out what the readings should be so I can tell if the unit is bad? Since the problem could also be in the water solenoid/water valve,I measured the voltage at the water valve solenoid and it measured 28 volts. Is this what it should be or should it be 110 volts? I measured the resistance of the water valve solenoid and it was 347 ohms. Does this sound correct? Any help you can give on this problem would be appreciated. Thanks.