Hi Nick, TBH I don't know. It is an 'arduino', but it has all the bells and whistles needed on the board. I would rather just replace the board if I knew that was the fault. the chip is SMD and I don't want to mess with it. It has been working fine for 3 years and now there is just a lot of hassle with things going wrong. I will probably end up sending the board to Sam at WanhaoUK.

https://www.wanhaouk.com/collections...-4-motherboard

It is this one. You never know , it might be just a smidge of conductive shite between the reset pin and ground. My next move is to blow off any dust, but I am not hopeful of a result. I am not in a financial position to say sod it and buy a new machine like the i7.

Cheers,

Rob

PS there is an interesting bit about rafts on another forum