Hi! I just finished the assembly of a MendelMax 1.5. Here are my troubles... I plug in the power supply (I used a regular cable that is used for a PC with the black [live], white [neutral] and green [ground] wires), and the power supply light turns on. If I have a fan plugged into the RAMPS board, it immediately comes on, so I know I have power going to it. Now, the Arduino board that RAMPS is plugged into does not appear to receive any power. I tried plugging it into my computer's USB port but nothing happens. Now, the minute I disconnect RAMPS from the Arduino board, the computer will detect the Arduino board (the drivers for it are already installed) and assign it a COM port. I can even tell Repetier-Host to Connect using that COM and it will do so. But obviously I can't issue any commands to the printer since RAMPS isn't connected. I'm using everything that came with the kit. I have a 12V / 29A power supply. All the wiring is correct. Positive/negative to positive/negative, etc. I know the Arduino board has an AC plug but I read that you shouldn't attach anything to it as it receives its power from the USB. Also, just in case you need to know, both Diode 1 and 2 are soldered onto RAMPS.
I'm not sure if it's normal or not, but when I plug in the power supply, the Arduino board gets really hot in a certain area (the little chip right beside the power plug.
I wanted to try plugging in another power source to the Arduino board (like a 9V battery), but I'm afraid to blow the lights in my entire city.
I would sincerely appreciate any help.
EDIT: Ok, so minutes after posting this... I try unplugging the SD card connector from RAMPS, and viola! Everything got power! Motors and bed started moving, lights were flashing on RAMPS, birds were chirping, etc. So now I'm not sure what's going on. I don't think the bed should just be moving back and forth permanently...
Edited 2 time(s). Last edit at 11/26/2013 09:50PM by mza1979m.