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TiBook - Bottom edges of screen becoming dim
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Junior Member
Join Date: Nov 1999
Status:
Offline
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Here's the deal, I got my TiBook just a week or two after it was released and I have loved it. No problems with it whatsoever (very lucky) except for one stuck-on blue pixel in the center of the screen. I can live with that, in fact I have lived with it. And I can live with this problem too, but it just seems weird. (point being I've had it a while and this just cropped up recently I think)
I hardly notice it when the screen is at full brightness, but when the screen dims to conserve power I notice that in about a 3 inch radial from the left and right lower edges of the screen it is less bright. Maybe it's the screen being pinched by having shifted... who knows. I've been real good to my TiBook though so the screen shouldn't have been like knocked out of place.
Please post whether or not you do have this problem so I know if it's just me.
BTW, one little observation I made which is interesting. When the display is at full brightness it won't appear to flicker when viewed with a video camera, but when dims it will start to appear to flicker through the eyes of a video camera. My guess is that the backlight uses AC at such high frequency that it is beyond the perception of the camera at full brightness, but perhaps slows down the frequency to make it less bright and is then more perceptible to the camera... anyways
-chas
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Addicted to MacNN
Join Date: Dec 1999
Location: Pleasanton, CA
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I have this problem too. I supopose it's a problem with the inverter board, since I have a friend with a Pismo that does this. If you can prove to Apple tech support that you have a flickering inverter board, they will replace it; your flicker needs to be really bad for them to recognize (let alone fix) the problem.
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Banned
Join Date: Mar 2000
Location: Sherman Oaks, CA USA
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Offline
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Yea, I'm the friend with the flickerin Pismo.
It turns out, it's a combination of my bad eyes and the nature of LCD backlamps.
chasnhisimac, your LCD is fine. Mine shares all of the same quirks yours does, excluding the stuck pixel. You just gotta live with these things.
If the flicker gets to the point where it is really iritating, talk to Apple about the inverter board, some nice tech support guys have heard of this problem, and they'll help you along.
Not to get off track, but to make sure you get a good tech rep, call early in the morning, they're nicer when they haven't been bombarded my moronic computer users. So, keeping these things in mind, good luck with your LCD.
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Forum Regular
Join Date: Jun 2000
Location: Singapore
Status:
Offline
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My Ti also exhibits the darker bottom corners at the dimmest setting.
But at the normal setting that I use (3/4) brightness it looks perfectly even. No flickering whatsoever - guess I'm lucky!
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Junior Member
Join Date: Nov 1999
Status:
Offline
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Thanks guys, I guess I should clarify that *I* don't see the flicker, but you can see it through a video camera. It's good to know that it's not just my LCD dimming....
-chas
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Banned
Join Date: Mar 2000
Location: Sherman Oaks, CA USA
Status:
Offline
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Yea, Albert Wu explained to me that if you use a digital camera, the flicker doesn't show up. Something to do with the way an analog camera picks things up in comparsion to a digital one.
Glad to hear you're ok with it.
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Grizzled Veteran
Join Date: Oct 2000
Location: 75016 Paris, France
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I had that problem on a new iBook. In the beginning, I thought the LCD was burning down and I became completely paranoid. So, I brought it too the AppleCare center in Paris (where they can examine the machine... yeap, we have one of those in Paris) and the technicien there told me that there are two possibilities that can cause such problem and it's not fatal at all:
1. The LCD was badly cut and it reflects less light than the other part of the screen
2. The backlight is not very well distributed all around the LCD surface and a part of the screen can get dim.
I didn't get what he wanted to say exactly but he guaranteed that it's not a "problem" so don't worry about it.
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Mac Elite
Join Date: Mar 2001
Location: England
Status:
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I have the brightness problem on my Pismo, and it shows even at full brightness. But I'm living with it, as it's only underneath the dock and the iTunes floater, not things I spend the day staring at.
Amorya
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What the nerd community most often fail to realize is that all features aren't equal. A well implemented and well integrated feature in a convenient interface is worth way more than the same feature implemented crappy, or accessed through a annoying interface.
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