Screen display shows only green

Question

AOC Q3279VWF

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Joopie @joopie38487

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crwdns2931729:0crwdne2931729:0: Ndz 21, 2025

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Screen display shows only green

Hi there im seeking advice on an issue with a monitor i found in the trash.

Its a AOC q32g2 monitor a curvy beauty (couldnt choose this in the menu above). And it only shows a vague light green image. It does this when connected to hdmi or displayport and when disconnected from anything except power, it does this aswel.

I remember having a distorted image on an old laptop and i could fix it by applying pressure on some ribbon cables running from the mobo to the display.

Do you guys think this green screen issue can be solved by opening the monitor and reseating the ribbon cables and trying to press some area's?

Thanks in advance!!

Hey,

Again, thanks for the info guys. I manager to get in. Used a plastic card and a plastic knife for children. Startend prying and twisting in the top corners.

There wasnt any cable attached to the plastic back panel as you can see in the picture. Also it doesnt look like anyone opened it before me.

Im going to further investigate the board and ribboncables tomorrow. Is it important to precicely reattach all the metallic and black stickers? Thats going to be hard.

If i plug in power and test pressing the ribbon cables, are there any component i need to avoid or else risk a shock?

Of course i wiIll keep you updated with pictures

.

Hey there,

I Managed to take some pictures of the main and powerboard. The latter has a bit of a darker brown area close to the biggest component on it. Cant really conclude anything on the mainboard.

Im going to reconnect everything screw the boards back, peel off the black tape and start poking the area's you told me.

PS Uploading pictures seems bugged. ill try to post the rest tomorrow.

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iGenie Repair @igenierepair

crwdns2934065:0crwdne2934065:0: 31

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crwdns2931729:0crwdne2931729:0: Ndz 22, 2025

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If your AOC Q32G2 is stuck on a green screen, the issue is almost certainly inside the monitor rather than with your HDMI or DisplayPort connection. The most common culprit is a loose or faulty ribbon cable connecting the logic board to the LCD panel. You can:

Open the monitor carefully and reseat the ribbon cables.
Clean the contacts with isopropyl alcohol before reconnecting.
Apply gentle pressure to see if the image stabilises.

If that doesn’t help, the problem may be deeper. Possible causes include:

A failing T-Con (timing controller) board.
A defective LCD panel (not economical to repair).
Less commonly, a logic board fault. It’s worth trying the ribbon reseat since it’s free, but be prepared that panel or board failure often means the monitor isn’t salvageable.

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Thanks you so much for the explaination! Im going to give it a try!

crwdns2934271:0Ndz 22, 2025crwdnd2934271:0 Joopie crwdne2934271:0

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Thanks you so much for the explaination! Im going to give it a try! — Joopie

score 0 · Answer 1 · 2025-09-22T19:10:51-07:00

@joopie38487 can you verify that your monitor is a q32g2 or is it a CQ32G2S.

Take a good look at your screen. Do not let the "green " light distract you. That is only the backlight that has turned on. What you do not have, is a video signal. Check the lines on your display that I've pointed out with those red markers

I am certain that those correspond with the CoF on the LCD driver boards ( the "plastic ribbon cables" that connect the driver board to the panel) You will need to disassemble your monitor and check those to make sure they are still adhered. Also check the board itself for any damaged component.

This monitor does not have a dedicated T-con board. The T-con circuitry can be on the main board or the T-con IC is on the LCD driver boards. Best case scenario is a bad FRP ribbon cable, worst luck is a failed driver board. Depending on what you find out, you could try a tape off and see if that makes a difference. If you just want to change something, I would go with the main board, but only if you can get it cheap and have a chance to return it.

Let's see those boards. Post some well focused close ups. Maybe we can help you identify what the issue is

Adding images to an existing question

@@joopie38487 thanks for the pictures. Good job opening it. Let's answer your questions

Is it important to precicely reattach all the metallic and black stickers? No, it is not. The black ones are just to keep the cables attached,. The metal ones are for EM interference and can easily be reused. Even if not applied, it is usually of no great consequence.

If i plug in power and test pressing the ribbon cables, are there any component i need to avoid or else risk a shock? You never want to touch anything on a power circuit board with your bare hands, always use insulated probes etc. Main components to always be respectful of are capacitors on the power supply. Those hold a pretty good charge which can zap you pretty good :-)

Under the metal casing in the center part of your monitor you should find the main board (as well as the power board). you will need to remove the metal enclosure. There are also LCD driver boards (looks like your monito might have two) on the top side of the monitor. You can simply flip the black plastic to the outside. IF nothing else, you can also cut it off. Careful so you do not damage anything underneath it.

Then again, take some well focused pictures of your boards etc. and post those with your answer.

@joopie38487 double check the 2nd last image. #1 looks like it was melted and #2 looks like the traces got hot. Double check both sides. The IC marked 5100C is actually a S510 Diode.

AOC Q3279VWF

Screen display shows only green

Update (09/25/25)

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Update (09/25/25)

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