So a little while ago the stepper motor that originally came with my Wanhao I3 Plus stopped working, no rhyme or reason to it.

I tried ordering another motor from amazon (3rd party) and that motor didnt work at all. So I ordered another 2 3rd party parts from ebay and they work for about 20-40 minutes at a time before they stop working (this time kind of accumulates across prints :L )

Its been suggested that it could be the stepper driver thats no longer functioning properly but thats going into territory that I have no idea about and I cannot find anything online to use as a guide to help me fix this problem.