Board only reading 1.9v

[profezzorn]

You need a multimeter to figure this one out.
Anybody who solders should have a multimeter.

Here is a reasonable recommendation:

The Measuring Machination

This is the multimeter I’ve been using since 2018 It’s been working really well, and while I need something better when measuring nanoamps, it’s accurate enough for just about everything else I do. If you really want the scoop on which multimeter is best, I recommend checking out the eevblog site and videos, but if you just need a reasonably good multimeter, this one seems fine to me.