Has anyone had the following issue: I was building the big box pro Titan Hybrid, and at first everything was going great. Step 26 proceed without a problem, the lcd screen displayed exactly what It said in the manual. When I reach the step 4.2 (commissioning), it was exactly when the problem showed up, the lcd screen shown an all-black display (when I turned the knob, there was no sound at all). I tried a few things to solve the issue, switching cables, change the contrast of the screen, but it didn't change anything. Suddenly a couple days later it started working as if nothing happened, I thought a cable was lose or something, anyway I proceed by printing the benchi.gcode file and everything worked beautify. When the print was done and everting was at room temperature, I proceed to remove the glass bed, in order to add some kapton tape. When I put it back the black screen presented again . Any ideas why is this happening? Any help will be appreciated, thanks and may you have a lovely day .