Hi Richard,
I hope you didn't have to pay that guy a service fee. You could have pulled anyone off the street and probably get a better answer than his. This guy is the reason why people are afraid to call for service (and come to us instead
).
Anyway, on to the problem at hand. This refrigerator has a main board near the compressor. See #36 on
this diagram. First unplug the refrigerator. Then check this board visually. Make sure the harness is securely plugged in. Look at both sides of the board for any possible burnt marks, unplug and inspect the harness as well (I know you said you did this already, but maybe double check just in case). Have you had a power surge or a power failure recently? This would probably damage the board (always a good idea to use a surge protector by the way). There is a number of things that may have failed on the main board - low voltage transformer, fried connection, bad relay. You can also check the display board, which is inside the fridge, #3 on
this diagram.
If you know how to use a
voltmeter and know how to read wiring diagrams, I can send you the right diagram for your model.
Your refrigerator is certainly worth fixing. Looks like it's only a couple of years old. How much was it? $1500-$1700? I wouldn't throw it away, unless I had to replace every single thing in it, which you won't have to do since you sent that "repairman" guy off on his way.
Let me know what you find.
P.S. If I had to make a not-so-educated guess, I'd replace the main board.