Welcome to the SeeMeCNC Community

LCD contrast is indeed the issue with the display. (Double check of the wiring is always wise too.) However, it took me a while to realize I had the problem because the adjustment knob had fallen off in transit. I tried adjusting it, but just to give SeeMeCNC a shout out, I contacted them about the ...

Given your other post about the bed heating as soon as you power up, I recommend you go through ALL the wiring carefully again. As they say in Tuscatillo "Somthin' ain't right." I checked the heated bed positive and negative wiring. Just as I thought, it was the negative wiring. I had switched the ...

Xenocrates wrote:Try adjusting the contrast pot on the back of the LCD, and see what happens.

Thanks, the contrast pot took care of the situation.

According to the instructions, the first time that you power on the machine, the LCD readout is supposed to show 2 lines of bars. Mine shows the blue backlight, but don't show the 2 lines of bars. I have followed the troubleshooting guide by JJ. Checked the cables, reseated everything, and no change ...

The first time that you turn on power before any firmware is installed, does the bed heat? Just wondering if this is normal, or a problem.

Does anyone with the Y adapter for Dual Extrusion on the Max V3 have Simplify 3D set up to print with this mod? If so, can you provide your settings?
Thanks In Advance