Horizontal line across 23" Cinema Display

Hi
I am using a friend's display, and it has an annoying horizontal 1 pixel line across the screen about 40% of the way down from the top. This is the 23" aluminum Cinema Display with the external power brick and DVI connector. The pixels appear to be about 50% gray, but the color changes a little (to a dark gray) depending on the surrounding image being displayed.
Any thoughts about what might be causing this and if there might be an inexpensive fix? (FWIW, I know it is in the screen since it does the same thing w/ various laptops plugged in.)
TIA
A

I had that happen on my 30" ACD. I believe it was caused by a power surge, but could've been just crappy manufacturing. Suffice to say I had display replaced (luckily it happened during the first 30 days).
I hope you have AppleCare for your display so that it can get replaced/fixed.

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Hi,
I'm using a 23" Apple Cinema HD Display as a 2nd monitor hooked up to 17" Macbook Pro 2.8GHz/7i via the mini display port. When I play out ProRes from the timeline with the external display set as Digital Cinema Desktop Preview, the image looks sliced horizontally, approximately in thirds, very noticeable when something is moving. It looks like a refresh issue, parts of the screen showing adjacent frames.
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dewshi wrote:
Actually, it shows the same issue displaying DV-PAL!
Although I'm working with ProRes, I have already experimented with playing out DV on a DV timeline, which should be less demanding than ProRes, as you're suggesting.
It doesn't look to me like the familiar cheese-grater artefact associated with interlacing issue as there's only one break in the image, rather than mismatching alternative lines when there is horizontal motion. I've tried different sequence settings for the field order, with no difference.
I'm wondering if the display is out of sync? It literally looks like the screen has been sliced by a razor 1/3 of the way down, and the bottom part is a different frame to the top. It happens when I scrub through the timeline too, but stabilises once parked on single frame.
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Hello again javajohn23,
I would like you to try the following steps:
Step 1. Turn off the computer, and then remove the power cord
Step 2. With the power cord disconnected, press and hold the power button for five seconds
Step 3. Reconnect the power cord, and then turn on the computer
If the above steps do not resolve it try the next set up steps:
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Please re-post with the results of these steps. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

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Hi @Sillenn
Welcome to the HP Forums!
I would like to take a moment and thank you for using the forum, it is a great place to find answers. For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
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Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

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Hi Folks
have a straight horizontal line across my screen. Can assist?

Yes, move the screen slowly back and forth, if it changes, you have a damaged monitor feed cable
Does it appear in all screens?
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post a pic, hook your AIr up to an external monitor, if its there, its GPU /logic problem
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perform SMC reset and re-verify
SMC reset
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Contact Apple for an appt. for in shop diagnostics and likely repair.

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Here is my experience with the new PowerBook display/horizontal lines issue. Please post any constructive advice you have that I can try - either to eliminate the problem or to pinpoint the cause more accurately.
I used to own a 15" Powerbook from about 12 months ago, a 1.33GHz model. The display on this was fine. Much better, in terms of brightness and clarity, than my other HP & Dell Windows laptops. When the PowerBook was stolen, one of the main reasons for immediately buying a new replacement PowerBook was the superior display quality.
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Apple Care telephone helpline suggested an NVRAM reset and a PMU reset. Neither of these made any difference.
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Apple Care helpline this time said that they could not find any problems with the PowerBook and I should first try the PowerBook connected to an external monitor and secondly take it to an Apple Dealer to show the problem.
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It seems obvious, but please don't contravene the Terms of Use for this forum. If you want to complain to Apple, please do it elsewhere - locked posts will get us nowhere

n2o2,
I don't know what let you think that you will eventually receive an AluBook without stripe : Apple Care let you think that ???????.
I have been reading the stripes topics each day since I ordered my new powerbook, late october. I did not see one single post proving that a "free line" 15" powerbook does exist.
The real evidence would come from someone describing the difference between a "non affected" new powerbook sitting besides an affected one, coming from the same PB generation and with exactely the same LCD profile and screen / Colorsync settings.
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Luc
AluBook 1.5 Ghz, G5 DP 1.8Ghz , G4 400 Mac OS X (10.4.3) airport express, iPod 3 & video

Horizontal Lines Across Display

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Hello Deggie. Thank You very much for the help. I think I will just leave it alone, because as I said it does not hinder the use of the product and also I am very sensitive to things like that, so I am probably one of the very few who would notice it.
Thank You Deggie
Everyone Else: If you want to say anything about this issue, the mic is yours!
-superhamster

Horizontal line across 23" Cinema Display

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