Faulty Acer Monitor

[Slugsie]

Recently my Acer monitor model ED323QUR monitor stopped working. It happened while I was using it, the display just faded to black over a couple of seconds. The back light still works, and the monitor powers on, but no display, not even anything from the OSD/power up display (usually get the Acer logo for a second or two).

 

I managed to source a second hand control board from Ebay, which apparently came from a working monitor with a cracked LCD. Same results.

 

The power board is supplying 12v as expected. I have a second monitor plugged into the graphics card and that working just fine, so because of that and not getting any OSD I don't think it's an input problem.

 

It's a nice monitor, and wasn't that cheap. It failed just a couple of months outside warranty unfortunately. I'd like to be able to fix it as I'm not in a place to be able to buy an equivalent replacement at the moment.

 

Anyone got any ideas?

[Mindovermaster Global Moderator]

Might be your backlight that went out. Happens. When you have your monitor on, shine a flashlight on it. If you can see something, that's your issue.

 

Can you RMA it, or is it out of warranty? I think you tried everything else. Sorry, but you might need a new monitor...

 

Edit: Oh, might have read over that. Did you contact Acer? Even though it is out of warranty, companies can still fix/replace it.

[Slugsie]

As stated, back light is working, and it's out of warranty.

 

I haven't contacted Acer. From what I've seen however they'll charge a something llike £70 just to look at it (plus my shipping costs which won't be insignificant on a 32inch monitor). That's before any replacements parts.

[jlowens76]

On 07/03/2021 at 11:29, Mindovermaster said:

Might be your backlight that went out. Happens. When you have your monitor on, shine a flashlight on it. If you can see something, that's your issue.

 

Can you RMA it, or is it out of warranty? I think you tried everything else. Sorry, but you might need a new monitor...

 

Edit: Oh, might have read over that. Did you contact Acer? Even though it is out of warranty, companies can still fix/replace it.

This has to be the most helpful comment I have found ANYWHERE online regarding these symptoms that lead to this issue. This is EXACTLY the answer and the easiest way to troubleshoot and see if its a backlight issue. Spent forever changing cables, power cables, only to get a little flick here and there. Shined flashlight on screen up close. BOOM can see everything on screen, so the backlights dead... Great.. This is the second Acer ED323QUR. First one was less than a year old and I returned it and got this one.(and im pretty sure the other one was prob the same issue, same symptoms)

Thanks for this answer!

[Mindovermaster Global Moderator]

On 21/12/2025 at 12:01, jlowens76 said:

This has to be the most helpful comment I have found ANYWHERE online regarding these symptoms that lead to this issue. This is EXACTLY the answer and the easiest way to troubleshoot and see if its a backlight issue. Spent forever changing cables, power cables, only to get a little flick here and there. Shined flashlight on screen up close. BOOM can see everything on screen, so the backlights dead... Great.. This is the second Acer ED323QUR. First one was less than a year old and I returned it and got this one.(and im pretty sure the other one was prob the same issue, same symptoms)

Thanks for this answer!

Glad my ~4 year old post helped you.