Stripped Flickering on ASUS Monitor (VG24VQ)

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Marcelo Cayo @xelo2000

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Опубликовано: 12 окт 2022 г.

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Stripped Flickering on ASUS Monitor (VG24VQ)

First of all, I'm sorry about the misleading device as iFixit doesn't have the one I got in their search system.

So, I had this problem ever since I bought this monitor and it gets annoying when trying to play a horror game or games with low brightness. This Flickering happens only when exposed to low light environment in games. Here it is on DOOM Eternal for example (Zoomed-in and Slowed-Down so it can be actually seen:

I've tried nearly everything that comes to mind as to why this could happen but nothing works, I've tried:

-Turning Freesync Off

-Using different color profiles

-Selecting another preset

-Swapping Display Port to HDMI

-Swapping AC Cable

-Cleaning ports

-Disabling every image enhancer (VividPixel, ASCR, TraceFree, etc)

-Swapping PCs

-Trying on a friend's monitor (he has the exact same monitor and has this issue too)

-Even trying on a TV and little did I know that it also occurs but it's very rare

I simply have no clue as to how this issue can be fixed or why does it happen and I am considering on just buying a new monitor...

Ответ на этот вопрос У меня та же проблема

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Hello,

I have an Asus VG27VQ and seem to have a problem very similar to yours.

From time to time, my screen shows vertical flickering lines.

I updated the graphics card and monitor drivers but that didn't help.

I have tried lowering the graphics card frequency and all the monitor menu options. But nothing worked.

At the moment, on this monitor, the problem presents the same way with two other PCs.

A few months ago I returned this monitor to the store and asked them to fix the problem. But they told me they couldn't reproduce the anomaly.

Indeed, when I recovered my screen, the problem did not appear any more.

But several weeks later, it came back. And I don't know what to do.

13 дек 2022 г. из Jacob Kerneach

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Hello,

I have an Asus VG27VQ and seem to have a problem very similar to yours.

From time to time, my screen shows vertical flickering lines.

I updated the graphics card and monitor drivers but that didn't help.

I have tried lowering the graphics card frequency and all the monitor menu options. But nothing worked.

At the moment, on this monitor, the problem presents the same way with two other PCs.

A few months ago I returned this monitor to the store and asked them to fix the problem. But they told me they couldn't reproduce the anomaly.

Indeed, when I recovered my screen, the problem did not appear any more.

But several weeks later, it came back. And I don't know what to do. — Jacob Kerneach

jayeff @jayeff Репутация: 459,1к 11 373 1,4к · Answer 1 · 2022-10-13T02:15:37-07:00

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jayeff @jayeff

Репутация: 459,1к

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373

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Опубликовано: 13 окт 2022 г.

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Hi @xelo2000,

How close is the DC power cord to the signal input cable connected to the monitor? (According to the user manual for the monitor, from this support page it has a DC-In port for power).

Are they're routed close together for a bit or even touching i.e. side by side?

To me it looks like what you're seeing is EMI (electro-magnetic interference) so either it is getting into the signal cable from the power cable or perhaps it is coming from the power adapter that is supplying power to the monitor.

Try separating the cables so that they're as far apart as possible to see if this has any effect.

How close is the monitor's power adapter to the monitor? Can you shield it somehow e.g. metal plate over the top of it, just to see if this has any effect on the picture?

Just a thought.

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I separated the DP cable and the Power Cable to be as far apart as possible, also isolated the power adapter of the monitor so no other cable would be close to it, however the issue persists. I will try another power cable just in case, as here in Chile we have to use an adapter to make the US Connector fit on the plug...

Edit: Different cable, same issue.

13 окт 2022 г. из Marcelo Cayo

@xelo2000

I might have mis-understood but did you also shield the power adapter as I suggested in case it causes the interference when converting the AC to DC for the monitor. A lot of switchmode power supplies create EMI interference when operating.

You said it occurred on a TV as well just not as bad

Perhaps connecting an EMI filter (example only) between the power outlet and the adapter or placing an EMI suppressor (example only) either on the signal cable at the monitor end or even the DC power cable at the monitor end might work.

13 окт 2022 г. из jayeff

Shielding the power adapter did nothing. The power cable that goes to the monitor has one of those EMI suppressors at the end. I'm not sure if I'd want to use those EMI Filters yet.

13 окт 2022 г. из Marcelo Cayo

@xelo2000

If you could get hold of a power consumption meter example only) suitable for your country, you could check that the AC mains supply was good as far as the voltage and frequency being correct.

I don't know what the acceptable range for the 220V AC power is in Chile but here in Australia the AC mains are 240V AC +/-5% i.e. 228V-252V and at 50Hz.

The adapter for the monitor is 100-240V AC at 50-60 Hz so it should have any problems where you are.

What concerns me is that it shows on the TV as well even though you said not so often.

Since your friend's monitor does exactly the same thing (assuming used with his power adapter, not yours) it might be a problem with the power circuit design in the monitor

13 окт 2022 г. из jayeff

I should be able to get one of those power consumption meters where I am. Here in Chile the standard voltage is of 220V at 50Hz.

I used my friend's own power adapter on his own monitor.

On the TV I can only recall that it only happened once or twice.

I should start saving money for a new monitor then because I have no clue what could be causing this, but I will try buying a VESA Certified DP 1.2 cable to see if that makes any difference, however, I wouldn't get my hopes up as I tried with multiple HDMI cables...

13 окт 2022 г. из Marcelo Cayo

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Stripped Flickering on ASUS Monitor (VG24VQ)

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