Just bought this unit last week, third time using it this morning. It powers up just fine but if I go to adjust the sensitivity or any other functioins the screen goes super dim and you can hardly see anything on the screen. It’s still running but I had to cup my hands around the screen to see it. Shut it off, fired up just fine tried to make an adjustment did the same thing.
First time ever owning a Marcum am I doing something wrong?