My ramps board isn't working properly. I can drive steppers, but I can't send power to D9 or D8. D10 however (hot end 0) does power on and heat the extruder.
Also, as you can see from the picture below, the power in block is burning. I've disconnected everything and have a new one on order. Some other things which may be relevant: This board has only ever driven 1 hot end and 1 heated bed (aluminium type 2b?, my home made custom heated bed isn't connected to this printer at all). The power supply is 360W and measures 12v at the outputs.
So before I start wiring in the new one, has anyone any experience of this happening to them and did they get a handle on what caused it? I'd prefer not to fry the next one too.
Thanks
EDIT: the burning is actually on BOTH sides of the green connector, so you can see similar marks on the other side too.
[attachment 45654 burning.jpg]
Also, as you can see from the picture below, the power in block is burning. I've disconnected everything and have a new one on order. Some other things which may be relevant: This board has only ever driven 1 hot end and 1 heated bed (aluminium type 2b?, my home made custom heated bed isn't connected to this printer at all). The power supply is 360W and measures 12v at the outputs.
So before I start wiring in the new one, has anyone any experience of this happening to them and did they get a handle on what caused it? I'd prefer not to fry the next one too.
Thanks
EDIT: the burning is actually on BOTH sides of the green connector, so you can see similar marks on the other side too.
[attachment 45654 burning.jpg]