from what I've seen, the stock pulley that comes with most dryers is not a very good one, if the belt gets caught on the side it will tear it apart, you may want to look into getting the pulley with...
if your machine is the older model I have in mind, no digital controls just 1-5 control knobs depending on your machine, then its one of 3 solutions... you may have a broken motor coupler or...
I recently repaired a side by side with a very similar problem, the problem was the timer was broken, located on the food side where your temperature controls are... The timer controls all your...
I've just started fixing appliances about 4 months ago but I have a great teacher... If your freezer side is cooling and your refrigerator side is too warm, then you may want to check your defrost...