Replacing LCD Screen for Your Resin LCD 3D Printer

When it comes to resin 3D printers, we know that both the resin, the vat, as well as the FEP film sheet at the bottom and the lcd screen are considered consumables.

For the FEP film, you have to change it af few weeks or a few months of using, depending on how often you printing, how large you printing, and how aggressive the peel force is, which can vary from printer to printer, from resin to resin.

Today, we'll have some tutorials of how to changing LCD screens of LCD resin 3D printers. While replacing a defective screen is not as easy as replacing fep sheet. The mono lcd screens usually have a couple of thousand hours of lifespan. So you shouldn't really have to replace it for a really long.

mono lcd screen change

The monolcd screen replacing tutorial works for Kingroon KP6, Elegoo Saturn 3D printers. We will need to start off by unclipping the existing lcd screen cable.
Before you start changing the lcd screen, make sure that your 3D printer is powered off. Unplug the power cable just to be on the safe side. Then, remove the screws of the bottom of the printer to gain access to the lcd ribbon cable.

Peeled off the adhesive that was holding that ribbon cable down to the controller board, and then it was able to pull out of the slot. Once that ribbon cable is loose we can go ahead and remove these screws on the top of the printer. The only two screws that you're not going to be removing are the two towards the backcenter which are the ones holding the stepper motor in place.

Once you've got those screws removed you can separate the top half from the bottom half of the printer. Then you need to unplug both the z end stop as well as the stepper motor cable from the main board. Remember to wearing gloves to avoid touching the led array directly. Because if you have any kinds of oils or things like that on your hands it could cause them to burn up quicker. so just be mindful, if you're not wearing gloves, to not to touch that led array. After that we will need to remove the black tape that is on the top of the printer surrounding the lcd screen.

Next we'll need to flip over the top half of the resin printer to gain access to the bottom side of the lcd screen. Push on the bottom side of the lcd screen with two thumbs until it kind of popped up. Place double-sided adhesive strips around the perimeter.

Then you can go ahead and grab the new LCD screen. You need to remove the plastic protective film on the screen. Then take the ribbon cable and the top portion through the thin slot in the top of the aluminum and place that new lcd screen on top of the thin adhesive strips. Make sure you do your best to align it before you actually set it on the adhesive. Apply a little bit of pressure to the outside edges just to make sure that the adhesive was really biting onto the lcd screen. 

Once the lcd screen is in place take the new strips of black tape and surround the perimeter on the top of the lcd screen. The main goal of this is to provent the damage of LCD screen, mainboard, or LED array if there's any kind of a resin leak happens.

Now you can remove the screen protector off the top side of the lcd screen.
Place the top half of your printer on the bottom half. Plug in that z end stop and stepper motor cables. Insert the new ribbon cable back into that slot and lock down the latch to make sure it's it's biting down on that ribbon cable.

When you turn on the printer and you go under the exposure test you'll see the rectangle displayed. And that means everything is done, then assembling the last couple screws.

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