My LG French Door refrigerator/freezer is not blowing much air into the freezer compartment and the food is thawed. The refrigerator is also not as cold as it should be. I checked the compartments and the vents are not blocked. I opened the back of the unit and cleaned the coils the best that I could. The main fan on the left bottom side seems to be working, not sure about the other fan. I put the unit in Test mode and it seemed like more air is blowing into the freezer compartment, but as soon as I return it to normal mode the fan shuts down. I also took the capacitor off and tested it with an ohm meter, checked out fine. I suspect it might be the sensors or one of the two circuit boards but I don't want to buy until I'm sure. Any suggestions would be most appreciated. Thanks.