I recently got a new Raspberry Pi 3 Model B+ and I managed to flash the OS. But the problem seems to happen when I try to boot it. I do not have the official adapter, but I tried the following:
with a USB to Micro USB Power supply by connecting the USB to my Mac.
I had another power adapter that I was using on my mobile phones. It is rated at OUTOUT: 5V 1A
With both the options, I get a constant red light after a couple of seconds of connecting the Pi to the power source. Is this some problem with the Power source? How can I resolve this? I have tried to flash my card atleast 5 times, but to no success. I then came to the conclusion that this could be a problem with the Power source. Can anyone throw some suggestions on how I can make this work?