My Samsung wf42h5200aw/a2 front loading washer gets stuck between the rinse and spin cycle over and over again for hours. Every part as been replaced. Anyone else having this problem?

check belt if ok possible cogs under agitator to tub

The pump could either be broken or clogged for your washing machine.Or the drain hose is broken or clogged or the switch assembly is not working anymore. A person that fixes washing machines would need to take a look and see what the problem is.

it's a design feature on most front loaders.

on many machines that is normal, the shaking continues until the load is distributed relative evenly around the spinning drum. It is also possible it is the main bearing but I am not sure. The noise I am talking about would have been there since new. These links may help. Washer has noise during spin cycle Whirlpool Maytag Sears GHW9100LW1 Washer is Making Loud Noise
How To Fix Washing Machine Making Noise During The Spin Cycle
http://www.partselect.com/Repair/Washer/Noisy/

Verify the door switches are activating correctly. If it senses the cycles are interrupted, they could be repeating. See if you have any codes. Check your codes in the manual. Your manual will also instruct you how to check for codes. It is very simple.

check pump for blockage

Le means there's a problem with filling. Check to be sure inlet hoses aren't kinked, and no blockage at the inlet, as well as water turned on.

check pump may b blocked

Many washer have two pumps in them. One circulates the water, the other is the drain pump. You may be hearing the circulating pump.

The water level switch works off water pressure at the tub fills. The switch, or the tubing connecting it to the tank may need to be replaced.