March 1, 2014 at 5:33 pm #21745
I’m not sure what power supply that could be, but please make sure that it has *regulated* 5 V output. That is necessary for proper operation.
As for the issues that you are describing, it sounds like there may be multiple soldering problems. Double check that all of your components are in the correct locations and correctly oriented, and check to see if you might have any accidental connections between neighboring pins on the bottom side, or any solder joints that look dry, blobby, or cracked.