What control board? Jackpot? Post up your config.
There are also some things you need to do. You need to know what your firmware is using for laser power scale. 0-255 is pretty common, and is usually the LB default, but I for example use 0-1000. So if LB says “25% power” and uses S64 as a parameter, I’ll get 6.4% power which doesn’t actually do much. Even 100% power from LB would then give me only 25.5% so I had to tell LB to use the 0-1000 scale.
So a “dull blue light” might be a power scale problem.
We’ll need more information to accurately troubleshoot.