This morning when we attempted to start a load of clothes, our dryer made a buzzing noise but wouldn't start rotating the drum. We shut it off.

I attempted to rotate the drum by hand. It would not rotate clockwise at all, but it would rotate counter-clockwise very slowly and with much force applied to it. Normally, if I recall correctly, it will rotate both ways with not too much effort required.

I held the door switch and attempted a push start of the drum while my wife pressed the start button. It did start spinning, but it was fairly obvious that it was struggling and it kept making a clicking noise until if finally stopped again. There seemed to be a slight overheating smell as well.

My first question is, obviously, what could be the source of this problem? Is this a motor issue, a drive belt issue, etc.?

Secondly, how do I disassemble this model to check it out? I have repaired my washer before, but never the dryer. Just quickly looking at it (I had to get ready for work) I couldn't see an obvious way to open it up to check the belt or other driveline components.

Thanks in advance for your help!