Ok. This is weird. This morning I installed the firmware and then checked basic functionality like XYZ\extruder motion, hot end\bed heating, etc. and everything check out. I needed to run a couple of errands so I unplugged the printer before I left. I came backplugged the printer back in, tweaked a couple of settings in the firmware (Z_MAX_TRAVEL, PLA_PREHEAT_HOTEND_TEMP) and uploaded it. Now the bed won't heat any more. When I ran my initial test I was able to get the bed to heat up using Simplify 3d. I set the temp 60C and selected "on" and the print bed started heating up without any issues. Now nothing happens. I mean Simplify 3d is behaving as though the bed were heating up but the red led on the ramps board won't turn on and the temperature won't change. I have the 2004 discount controller and tried getting the bed to heat up from there. The red heating led will turn on but the temp wont change. I used my multi-meter to check the power inputs in that green connector on the ramps and both inputs register 12V. When I try heating the bed there is no power output on D8. I'm not sure what happened(or what I screwed up). I test the impedance on the heater bed and (if I did things correctly) got an impedance o 1.1 ohms. Please advise. Thanks!