Please help!

I have a reasonably new, about two years old frigidaire fridge that quit cooling after a power outage. It runs but doesn't cool. and I am not sure if the compressor is running or not.

Anyway, my wife is a retired apartment manager and one of her old maintence guys told her over the phone without looking at it that it probably needed a 3 in 1 switch.

Well I made the decision to have the neighborhood appliance shop come by and give me an estimate. Well the guy came by when I was working so i was unable to speak with him or see what he did as far as diagnosing the machine.

According to the wife he just opened the front doors and after a few questions to the wife about what happened he wrote and left me an estimate for a bi-metal switch and a thermostat control module.

Well I purchased and replaced both parts but it did not fix the fridge, it still won't cool and now my wife thinks i am an idiot for not listing to her instead of the appliance company repairman.

I see in the parts diagrams for the machine both a starter and a run capacitor but I don't know if i need one or the other or both or niether one. I have zero experience fixing appliances or anything electrical.

Anyone have some advice to get this thing running and save me from my grief?

Get access to the compressor to see if it's running. Take the cardboard off the back. If it's not running, see if you here the relay clicking when someone turns the unit on. Here's how to test relay>Refrigerator Repair Guide: How To Test the Compressor Relay - ACME HOW TO.com