Lost power With High speed running

I have an 80W Morn MT-960. I ran a project and all was well. I liked it so I ran it again. NO JOY!
After many tries, I finally got it to cut a 1/8th acrylic 1" sq at .2 speed and 30 pwr??? If I reset to any other pwr the speed goes crazy … very fast and just marks the surface does not cut! I put in a new tube in May 2021.
So how do I test the controller??
Also how can I check what version this ruida controller I have? There are no markings on the outside of the controller box. I do have all three axes working with this one.
I am concerned that this thing runs with .2 Power!

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