Hardware troubleshooting LCD screen  

RE: Hardware troubleshooting LCD screen

Posted by: @alice-l2

Hi all,

 

Turned my i3 mk3s this morning and the LCD is only displaying the top left quarter, on start up I get boxes and lines on the rest of the screen, then it disappeared, now its flickering. I powered down pulled the cables out at both ends and reconnected them to make sure they hadn't come loose and still seeing the same symptoms. Attached are images. Anyone have any ideas what to try next? Not sure if its the cables, the screen, or the board. Any help would be much appreciated! Thanks!

 

 

You can try to flash the latest firmware and possibly do a factory reset. You have already checked the ribbon cables? Also watch out for electrostatic charges. If nothing helps, you will probably need to replace the LCD board. There are some sources of a replacement on the net.

RE: Hardware troubleshooting LCD screen

@karl-herbert

Thank you for the help! Yes I already checked the ribbon cables, but will try a factory reset!

My warranty expired 2 weeks ago so it's probably the LCD board 🙃 Will start looking for replacements just in case

RE: Hardware troubleshooting LCD screen

@alice-l2

Replacements you can find on the Prusa sites (login and select eshop), or here:

https://www.printedsolid.com/products/ldo-prusa-black-screen-with-white-text-mk2-mk2-5-mk3-lcd-display?variant=22245381505109

https://www.ebay.com/itm/5V-Black-20x4-Character-LCD-Module-Display-w-Tutorial-HD44780-Controller-Bezel/291020233945?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

https://zaribo.com/home/192--20x4-lcd-display-by-ldo-white-black.html?SubmitCurrency=1&id_currency=2

https://www.aliexpress.com/item/32965431709.html?spm=a2g0s.9042311.0.0.27424c4dHB1Uln