Refrigerator not running, was a few days ago, copressor very hot

You need to check to see if the compressor is running when the system starts getting hot. Issues that are going to make it it warm are as you said, a compressor failure, but it could also be a condenser fan sporadic failure, dirty condenser coil, or even a partially capillary tube.

Also check you evaporator coil on the inside of the refrigerator when it gets warm. If the evaporator fan fails. You'll have no air flow across the coil and once it freezes over, you will lose any convention cooling you had and the box will get warm and the ice on the coil will continue to grow

Could be the t stat not shutting the unit off..so it runs all the time untill it freezes the evaporator in the the freezer then it runs and runs and gets hot...or if it has had a compressor replace before..the freon level what not put back in thr right way..meaning its overcharged, or undercharged..this will also do this...The coils are dirty under the unit...

If it has fan to deliver cold air, and it is not working, cold air is stuck on the begining. So your fan could be dead. And I suppose, that compressor is running all the time. Even compressor could stert freezing if fan does not deliver cold air in fridge. The other option is, that there is not enough gas in the compressor. In this case compressor vould not be freezing, but line, going out of compressor has to be hot, if it is not, there is no gas.

Have you really checked to clean it underneath.

Get a thermometer, and place it inside the freezer. The temperature should get at least 17 degrees. If it is like 28 degrees or highe it will freeze water but not other things like some popsicles which freeze at lower temperature.

Don't know three in one is, capacitor?
The compressor has oil in it. If the unit is layed on its side, compressor oil can leak out into the refrigeration tubing. This can cause a refrigeration circuit clog. Leaving the unit disconnected, upright, for a few days, sometimes fixes this oil clog.
If it sprung a refrigeration leak, it's another story, it needs a service tec looking for a leak. Then repairs, just chuck it or invest in this nice unit on repairs.
If compressor and fan blowers all run and work, the electric portion is good, compressor line gets hot, the other one cold.

if you have 2 setting set both at the factory setting,if you don't know the factory setting set both at the halfway point and wait-mike

there is another fan at the bottom, rear, of the refigerator. remove the bootom panel and look at the cooling fins to make sure they are not bent into the fan blades. Caefully bend the fins away from the fan. this should improve the cooling of the refrigerator and get rid of the hot spot on the rail between the refrigerator and freezer.

Yes it is very possible that exactly what you are describing can be happening. Also try a thermometer frozen in a cup of water to get more accurate temps. Also 33 in the fridge is very normal for the cold control set on max and the heater installed. Let me know the temps in the frz with the thermometer sensing product temp not air temp which fluctuates often.

CHECK TO SEE IF THE CONDENSOR FAN IS WORKING IT COOLS THE COMPRESSOR IF IT IS THEN UNPLUG IT AND LAT COOL DOWN FOR A DAY THEN TRY TO SEE IF IT WORKS BETTER IT MAY NEED A RELAY OVERLOAD TOO BUY A 3 N 1 START KIT IT TELLS YOU HOW TO WIRE IT ON THE PACKAGE