Geeetech

Hi all.

While dinking around with my display, I managed to jank my LCD so that the top row is blank and the second row is incomplete.

I ordered a replacement from Geeetech and, as stated on their purchase page, noted that I needed the LCD for the GT2560 V3 board. I received the replacement but when I connect it to the display cable it shows only two solid bars.

What am I missing? Do I have the wrong LCD?

Yes, I am sure I have a V3 board. I'm running Marlin 1.1.8.

Hi, you can try to reconnect the screen cable,
Then update the firmware,
Check the situation,
Can your printer print through the slicing software connected to the computer via USB?
You can determine whether the motherboard is normal.

Hi again, William.

You think that perhaps the new screen will work if I reflash the firmware while it is connected? Does this mean that you think that the LCD that I have is not the same model that came with the printer?

I am currently using Octoprint and I am able to send jobs through it to the printer using Slic3r, no problem.

I am fairly sure the motherboard isn't the issue. This problem started when I removed the LCD board from it's housing, including unbending the metal tabs that hold the bezel to the board. When I got out back together, it was screwed up.

Hi, You can check whether the lower screen line is broken,
Re-plug the screen cable.