One thing I discovered, the device must have at least .850 amps or you’ll have issues. At 1 amp @ 5 volts through the micro USB, not a problem driving a mouse, keyboard, VGA adapter and a small set of speakers.
I purchased the recommended power supply when I purchased the Pi from Allied Electronics.
To minimize the number of possible variables I was only plugged in to power, keyboard, and monitor. The monitor was LCD with VGA to HDMI converter.
I don’t have anything to measure power input/output. What do you suggest I buy? Thanks.