Xcelorin not going forward

[AlisdairO]

Hey all,

I'm experiencing an issue with my xcelorin setup that I thought you chaps might have some knowledge on. The motor works much of the time, but if it stops at a certain point, it won't go any more. If I move it on a cog, it starts working again. I imagine this is due to sensor issues? I've changed the sensor wire, but that hasn't changed anything. Any thoughts?

Fortunately I haven't actually taken the heatsink off it yet, as I wouldn't be surprised if that invalidated the warranty