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LCD display not working (First time startup, kit)

Jan 17, 2019 9:16 pm


I recently bought and assembled a Prusa MK3 kit. Everything was running smoothly until I plugged it in.
The LCD display flickers once and then nothing.

I've checked the cables to many times to count, and they are correct.
I tried adjusting the contrast of the display but nothing happened.
I flashed the firmware to the latest version but again; nothing.
I wore an anti-static wristband throughout the entire assembly (even with the plastic parts) so I am at a loss.

Anyone have any idea of what to do?

Here´s a video of what it looks like: ... sp=sharing

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Re: LCD display not working (First time startup, kit)

Jan 17, 2019 11:38 pm

Hi Erik,
First observation,

The video does not show a Mk2 Prusa, it shows a Mk3 you have posted in the mk2/s section of the forum.

on the back of the LCD board, there is a tiny trimmer resistor which adjusts the contrast, have you tried adjusting that, to see if it resolves your difficulty?
LCD.jpg (98.41 KiB) Viewed 61 times
regards Joan
I try to make suggestions that I believe to be well founded and safe,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions,
what you do, is YOUR responsibility.

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