When I plug my Arduino/Ramps using the usb cable I get see the Marlin software on my lcd just fine. I can navigate the menus and make selections. When I plug the power cable into the Ramps the lcd is blue and no Marlin software is viewable. Now, everything worked just fine up until the point I plugged in two motors to the X stepper. I noticed that both motors were plugged in incorrectly. I switched the connection and the motors moved just fine. This is when I noticed that the motors would begin to work intermittently. I would have to spin the dial very slowly to get the motors to spin again which would work for a few seconds before it stopped for another few seconds. I unplugged everything and re-plugged the power cable and that is when I noticed the blue screen with no Marlin software.
I figure that I either fried the Ramps board or there is a loose connection in the green male or female plug. Since it works when plugged into the Arduino but not the Ramps. Any ideas as to what else I can troubleshoot.
I was not using that power block at the time all this happened. I was actually using this one
I ended up switching power blocks in case that was the issue. As you can see from the photo it did nothing to resolve the issue.