Low voltage or other problems?

I’ve been having problems to PixelBlaze 2+.

It was working fine for a while but now it just seems to be going in a reset loop.
Yellow light stays on for about a minute, then resets.

I’ve thought it could have been a low supply voltage. Originally was measuring around 4.5V.
After reconnecting some of the connections, it measures 5.102V. So I would think that’d be OK.

I have a 15A supply but it’s drawing only about 10% of that.

Before the first pattern would start up but now its not even doing that. Can’t connect via Wifi either.