Pi 3 Model B+ has steady red PWR LED but no green ACT LED with 2018-03-13-raspbian-stretch.img. See screenshot below. I'm not sure if the side of the ACT light is red and if so if that's also a problem?
After some web research I was told to use the specific stretch image, which DOES work fine on the same SD card on my Pi 3 Model B V1.2 (2015).
I am using this power adapter shown below.
I guess let's start with an answer to this question: What is a known working Raspbian image (or I guess ANY distro/flavor with minimum dropping of other files into the image, etc..) that works with my model?
Background: I bought this for the purposes of the 5GHZ wifi and it will be (hopefully) powering my 7 inch Pi Display V1.1 which I had working with other Pi models.