Hi there, I have built a ramps 1.2 board and the brain is an arduino 1280. However the power doesn't seem to be working on it. I plug in the power into the ramps and when i press the power switch the green LED barely flickers. I got the ramps board soldered by an expert. i have the power source connected but nothing at all. I am a complete newbie and assuming there are people who have had the same problem as I so if anyone knows of this and could even direct me to a forum conversation being had on the topic that would be great. Or if anyone could harbor a suggestion as to what the problem could be it would be very much appreciated. Thank you all for your time..