Then it is most likely 1 of 2 things: motor or pump. If it is the pump then it may be because of total pump failure, or it may merely be a blockage in the pump.
You say to check to see if the motor is hot. I assume you mean that I should turn the machine on for a minute or 2 and see if the motor heats up. If it does, is that usually a good indicator that the motor has failed? If so, then if I pull the machine out from under the counter top, will that allow me access to the motor in order to remove and replace it, or will I have to break the machine down from the inside?
If it does not appear to be the motor, then if I pull the machine out from under the counter top, will that allow me access to the pump in order to check for blockage and/or to remove and replace it? Will the blockage simply be debris of some sort?
I am pretty good with my hands and and somewhat mechanically inclined, but I do not know how to break the machine down from the inside. Is there an online diagram or something that shows me how to do it? Will it be pretty obvious how to break the machine down from the inside? Are there a lot gaskets and things that I will need to remove and replace?