delslogos74 wrote:I have got someone to resolder the pcb from the hotend to make sure everything is ok on that but I have just notices that on the loom from the motherboard to the hotend were the wires connect to the connector there is a black wire which is not connected looks like it has broken from the connector.. I will take a look at that night and see if thats the case.. Otherwise I can't see anything else which looks wrong or blown.
That is most likely your problem as that is the thermistor lead. The thermistor is a very small device that depending on your model is inserted into the side of the brass heater assembly or the top of it which makes it very hard to see. It has very fine almost hair like leads that are sleeved in semi clear teflon. If the sleeves move which they can if disturbed, the leads can short together or short to the brass heater assembly. That too will cause the reported temp to not change which will result in not heating.
If you look at the image in this post you can just see the small wires I am talking about on the left side of the heat block just in front of the red heater core wires.
http://www.soliforum.com/post/80378/#p80378
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