Evaporator Fan turns on when plugged in, but then stops. Problem?

I have same problem. Just want to add that I plug it in and Compressor runs, 15 seconds later evaporator fan comes on, 30 seconds later it stops, compressor continues non stop. Freezer will reach 8 Deg. F or lower. Frig. will over night reach 57 Deg. F, or43F over time. That should narrow it down some, But that board is just under $400.00 Dollars. Also my E Fan has about 5 wires that tells me it's a Multi or variable speed motor. Other than touching a currant sensor to the leads I'm not sure which leads to meter test. to determine if voltage is dropping out or if motor is bad. My Frig is 2 YR. 2 Mon. old. ):

@lgsufferer

What is the model number of the refrigerator?

Check online using the model number to see if you can find out how to perform diagnostic tests on the fridge, or look for the service manual as that usually details the diagnostic procedure.

Thank You. I tried both between loading coolers. I swapped it out with my smaller shop unit. So I'm out of the woods for now. LG Model: LTCS24223/07. Thanks again. I'll check it out again.

To: Tim And Jayeff

Subject: Good News Bad News

Good news; As of about 9:30 this AM, Eastern time, about two hours ago, its been running like a charm, perfectly. This after unplugging it, removing the shelves, drawers and doors and wheeling it out of the house (down two steps), down the driveway and into the shop. where i left it in pieces until this morning. I should say that I did take off circuit board and compressor access covers looking for anything obvious (loose wires Jayeff) found nothing. I did tip the whole unit forward to about 2 feet off the floor to drain some water (hot) out that I think was what I spilled Thawing out drain. I left it until today. I re installed doors but not covers, plugged it back in and let it get going so i could perform the circuit board four push test button test. and waited for it to act up. - - - - it has not acted up!

Bad News: I don't know why!? So, I'm just going to see how it goes for a week or two. Maybe jiggle some wires. In the mean time we'll use it long distance. - - - - - Just went down and it's still running. Took readings with a laser type point and shoot thermometer. Just found temps off back walls of compartments to be below recommended so i shot side walls and are closer to normal. that's all for now.