After having more issues like I've mentioned before, with the Y axis stepper grumbling and groaning when booting up & homing, and also when trying to laser- it jumps about instead of moving smoothly - I've unplugged the Y axis leads, from the motherboard to the stepper, and tested them for continuity- and all is OK in that aspect.
The stepper is fine also - I tried two others and they behave the same way.
I put everything back together tonight, after deciding to put the diagnosing of the problem into the too-hard basket for the time being, and when I turn the laser on, the console lights up green, and boots up, but nothing comes on the display to count down the initialising, and to ask for files etc. The display just glows.
I'm wondering if anyone might have an idea of how I can get the text back?
Unplugging and replugging all the leads from the motherboard has made no difference so far. Reseating the RAM did not help either.
Thanks in advance for any ideas...