Quote: Originally Posted by pebbly
Quote: Originally Posted by amandeepmail
But as per dwarf there are many layers and due to scratch internal layers might be damaged. I don't really want to buy a new motherboard knowing that this might be fine, but still i don't want to damage other parts of my pc (cpu, ram) by using the mobo.
looking at the photos' it looks like surface damage only ,Dwarf is correct in what he states as the mobo being multilayer and if sufficient depth of scratch as occured , then you would be looking at interconnection between the outer and inner layers of the board ,but in your case i personnally dont think the scratch is that deep
I wouldn't have recommended the simple tests had I thought that scratch was extremely deep. I think you are in luck and it is a surface scratch. Cover it with a few layers of clear nail polish and you should be fine. Nail polish is flammable in it's liquid state, but as it dries, it becomes a flammable, but not a combustible, as in it will burn, but only when exposed to flame, not any heat that it will see from a motherboard.
Quote: Originally Posted by pbcopter
First, I would not use a 9V battery to perform any tests. Since you don't know where those traces go, you could damage components that are connected with that much voltage.
There is no danger as the circuit is completed between the wires and includes only the trace that is between the wires. It is effectively a short circuit.