Just got new Pi3 B+ today from reseller. I went ahead and test it out and it doesn't work. Only PWR LED was lit. I tried another SD card and still doesn't work. I also tried reflashing Raspbian instead of NOOBS and still doesn't work. I supposed it's the Polyfuse that blew up.
EDIT : Forgot to provide that I use Official Raspberry Pi adapter. I even tested it with my Pi3B and all my 3 PiZeroes
EDIT #2 : And again, I forgot to provide that there's no video output. But when I first got it the Pi actually had video output and green LED blinked few times (I didn't count them)