flashing/flickering lcd...

[norbert]

I'd just like to verify with an IBM techie or two that a bad inverter borad can cause a flicker/flashing intermitten backlight on the lcd. I had these go bad in T- series thinkpads in the past the backlight went out in whole...


This could be a safe bet... Also, the flicker/flash used to come only during battery opertaion. now it's happening even on AC. All powermanagement utlis and software are disabled. Drivers are 100% to my knowledge.


N.

[DIGITALgimpus]

Could be is the key issue.

Could also be a backlight that's going, among other issues.

[smstewart_9554]

I've had my T43 about a month and have noticed that the screen has begun to flicker occasionally. Is this normal or should I request service? I read that it could be the inverter board or maybe the backlight, but I don't understand how either of these should be bad since my T43 is only a month old.

To describe the "flicker," it's sort of licka red or blue color that moves very quickly across the screen left to right.

Thanks,
Shaun

[beerak]

Does it happen on any background ? Does flicker whole display or a part only ? Is there some sharp colour transition on the screen while flickering ?

[smstewart_9554]

I'm not exactly sure what you mean by does it happen on any background, but it does happen when I have different programs running (the only one that was commonly running was Outlook).

The whole screen flickers and I think what you describe as a sharp color tranition might be what I try to describe in saying that the flicker was red and blue. But I could be wrong.

Thanks,
Shaun

[beerak]

I'm not exactly sure what you mean by does it happen on any background, but it does happen when I have different programs running (the only one that was commonly running was Outlook).

The whole screen flickers and I think what you describe as a sharp color tranition might be what I try to describe in saying that the flicker was red and blue. But I could be wrong.

Thanks,
Shaun

Try this page http://bonusweb.idnes.cz/ this contains a lines on the left and right side on the dark background. In the middle there is a text and a box. The left and right side will be flickering. It is a some kind of interference without solution based on the principles of the used technology. A lot of LCDs will be flickering there.

But if your LCD flickers on the common background it is a problem, but if you set some background similar to this one - with lines one near by one. Then it is a source of this problem.

[GomJabbar]

A lot of LCDs will be flickering there.

Maybe I found an advantage for having XGA? I don't see any flickering there.

[beerak]

A lot of LCDs will be flickering there.

Maybe I found an advantage for having XGA? I don't see any flickering there.

Better said "you have found IBM" We have Acer and Dell LCDs (not notebooks) and they are flickering on that page. Both are TN panels. Acer flickers more than Dell.

[norbert]

what i mean is that my backlight goes in and out...

[DIGITALgimpus]

Try this page http://bonusweb.idnes.cz/ this contains a lines on the left and right side on the dark background. In the middle there is a text and a box. The left and right side will be flickering. It is a some kind of interference without solution based on the principles of the used technology. A lot of LCDs will be flickering there.

But if your LCD flickers on the common background it is a problem, but if you set some background similar to this one - with lines one near by one. Then it is a source of this problem.

That is simply the result of a rather complex pattern (refresh rate comes into play here), and graphics capabilities (graphics card comes into play here).

That happens on many, and isn't because of any defect. That's just a limitation of your configuration.

This is why many hardcore gamers, and all video experts won't use a LCD display. And they will insist on desktops so they can use the latest graphics cards.

Try getting one of them to get their computer on their lap

[beerak]

Try this page http://bonusweb.idnes.cz/ this contains a lines on the left and right side on the dark background. In the middle there is a text and a box. The left and right side will be flickering. It is a some kind of interference without solution based on the principles of the used technology. A lot of LCDs will be flickering there.

But if your LCD flickers on the common background it is a problem, but if you set some background similar to this one - with lines one near by one. Then it is a source of this problem.

That is simply the result of a rather complex pattern (refresh rate comes into play here), and graphics capabilities (graphics card comes into play here).

That happens on many, and isn't because of any defect. That's just a limitation of your configuration.

This is why many hardcore gamers, and all video experts won't use a LCD display. And they will insist on desktops so they can use the latest graphics cards.

Try getting one of them to get their computer on their lap

that's not true. frequency plays role in case of low refresh rate (below 8ms). On really slow LCDs (25ms and more) this behavior can't be observed. IBM's LCDs are slow. That's theid disadvantage.